Tag: Engineering

Category: Area of Significance



Works

CompositionKindCreatorAsNotedIn
CompositionKindCreatorAsNotedIn
Hoover Dam: An American Adventure Book



Places

PlaceTypeAsNotedInLocale
PlaceTypeAsNotedInLocale
Harmar Historic District
  • NRHP
Marietta
Winooski Falls Mill District
  • NRHP
Winooski
SS NIAGARA (freighter)
Erie
Warrior Ridge Dam and Hydroelectric Plant
  • NRHP
Petersburg
ADVENTURE (schooner) Gloucester
Southern Terminal, Susquehanna and Tidewater Canal
  • NRHP
Havre de Grace
Brandhuber Ice Company Barn
Pierre
Lowell Locks and Canals Historic District Lowell
Snoqualmie Falls Hydroelectric Power Plant Historic District
  • NRHP
Snoqualmie
Barnesville Historic District
  • NRHP
Barnesville
San Antonio Missions National Historical Park San Antonio
Harms Mill Hydroelectric Station
  • NRHP
Fayetteville
Lawrenceburg No 2 Hydroelectric Station
  • NRHP
Lawrenceburg
Hoover Dam Lake Mead National Recreation Area
Hoover Dam Boulder City
Cape Hatteras Light Station
  • NRHP
Cape Hatteras National Seashore
Calderwood Dam (Boundary Increase)
  • NRHP
Calderwood
Walter Hill Hydroelectric Station
  • NRHP
Murfreesboro
LOUISIANA (Shipwreck)
  • NRHP
Washington
NOQUEBAY (Schooner-Barge) Shipwreck Site
  • NRHP
Lake Superior
SEVONA (Bulk Carrier) Shipwreck Site
  • NRHP
Bayfield
US Naval Air Station Dirigible Hangar B
  • NRHP
Tillamook
Kennesaw Mountain National Battlefield Park Georgia
Pentagon Office Building Complex Arlington
Huffman Field Fairborn
Air Force Facility Missile Site 8 (571-7) Military Reservation Green Valley
Montgomery County Jail and Sheriff's Residence
  • NRHP
Crawfordsville
Laughery Creek Bridge
  • NRHP
Aurora
Westport Covered Bridge
  • NRHP
Westport
North Manchester Covered Bridge
  • NRHP
North Manchester
Howard Home
  • NRHP
Jeffersonville
Majestic Building
  • NRHP
Indianapolis
West Washington Street Pumping Station
  • NRHP
Indianapolis
Fort Ruger Historic District
  • NRHP
Honolulu
Opaekaa Road Bridge
  • NRHP
Kapaa
Steyer Bridge
  • NRHP
Decorah
Cedar Creek Bridge
  • NRHP
Elgin
Brush Creek Bridge
  • NRHP
Baxter Springs
Mine Creek Bridge
  • NRHP
Mound City
Pottawatomie Creek Bridge
  • NRHP
Osawatomie
Blacksmith Creek Bridge
  • NRHP
Topeka
Conrad Rice Mill
  • NRHP
New Iberia
Crockett, David, Fire Hall and Pumper
  • NRHP
Gretna
Smith, Arthur A, Covered Bridge
  • NRHP
Colrain
Crittenden Historic District
  • NRHP
City of St Louis
Marion Park Pavilion
  • NRHP
Glidden
Marsh Rainbow Arch Bridge
  • NRHP
Chippewa Falls
Madison Waterworks
  • NRHP
Madison
Davidson Windmill
  • NRHP
Superior
Mineral Point Hill
  • NRHP
Mineral Point
Shot Tower
  • NRHP
Spring Green
Pilgrim Family Farmstead
  • NRHP
Kewaunee
Bridge No 1
  • NRHP
La Crosse
Bridge No 2
  • NRHP
La Crosse
Bridge No 3
  • NRHP
La Crosse
Bridge No 4
  • NRHP
La Crosse
Bridge No 5
  • NRHP
La Crosse
Bridge No 6
  • NRHP
La Crosse
Waterworks Building
  • NRHP
La Crosse
Milwaukee Fire Department High Pressure Pumping Station
  • NRHP
Milwaukee
North Point Water Tower
  • NRHP
Milwaukee
Hearthstone
  • NRHP
Appleton
Turtleville Iron Bridge
  • NRHP
Beloit
Watson Settlement Bridge
  • NRHP
Littleton
Fort Gorges
  • NRHP
Portland
Two Cent Bridge
  • NRHP
Winslow, ME
Two Cent Bridge
  • NRHP
Waterville
Bennett Bridge
  • NRHP
Wilson Mills
Hemlock Bridge
  • NRHP
Fryeburg Center
Sunday River Bridge
  • NRHP
Newry
Bangor Standpipe
  • NRHP
Bangor
Robyville Bridge
  • NRHP
Robyville
Tramway Historic District
  • NRHP
Greenville
Fort Baldwin Historic Site
  • NRHP
Phippsburg
Perkins Tide Mill
  • NRHP
Kennebunkport
Old Rockport Bridge
Rockport
Royal Gorge Bridge and Incline Railway
  • NRHP
Canon City
Phillips, Thomas, Mill Complex
  • NRHP
Newark
Lake Mirror Promenade
  • NRHP
Lakeland
Ford Motor Company Edgewater Assembly Plant
  • NRHP
Edgewater
Rorig Bridge
  • NRHP
Westfield
Mount Beacon Incline Railway and Power House
  • NRHP
Beacon
Poughkeepsie Underwear Factory
  • NRHP
Poughkeepsie
Longue Vue Island
  • NRHP
Alexandria
Croton Aqueduct Gate House
  • NRHP
New York City
IRT Broadway Line Viaduct
  • NRHP
New York City
Storm King Highway
  • NRHP
Highlands
Bear Mountain Bridge Rd
  • NRHP
Cortlandt
Newland Road Site
  • NRHP
Morgan's Corner
Peter Gendron House
  • NRHP
Toledo
Turpin Grain Elevator
  • NRHP
Turpin
Adams Woodframe Grain Elevator
  • NRHP
Adams
Baker Woodframe Elevator
  • NRHP
Baker
Baker Woodframe Grain Elevator
  • NRHP
Baker
Eva Woodframe Grain Elevator
  • NRHP
Eva
Hooker Woodframe Grain Elevator
  • NRHP
Hooker
Hough Woodframe Elevator
  • NRHP
Hough
Mouser Woodframe Grain Elevator, Collingwood Elevator
  • NRHP
Mouser
Optima Grain Elevator
  • NRHP
Optima
Tracey Woodframe Grain Elevator
  • NRHP
Muncey
Presque Isle Light
  • NRHP
Erie
Welty's Mill Bridge
  • NRHP
Waynesboro
Girard Group
  • NRHP
Philadelphia
Dillon Memorial
  • NRHP
Davenport
Baumann House
  • NRHP
Camp Springs
Simon Kenton Memorial Bridge
  • NRHP
Aberdeen
Simon Kenton Memorial Bridge
  • NRHP
Maysville
Cold River Bridge
  • NRHP
Langdon
Meriden Bridge
  • NRHP
Meriden
Pier Bridge
  • NRHP
Newport
Wright's Bridge
  • NRHP
Newport
East Shoreham Covered Railroad Bridge
  • NRHP
Shoreham
Halpin Covered Bridge
  • NRHP
Middlebury
Pulp Mill Covered Bridge
  • NRHP
Middlebury
Arlington Green Covered Bridge
  • NRHP
Arlington
Bennington Battle Monument
  • NRHP
Bennington
Bennington Falls Covered Bridge
  • NRHP
Bennington
Henry Covered Bridge
  • NRHP
Bennington
Silk Covered Bridge
  • NRHP
Bennington
Burrington Covered Bridge
  • NRHP
Lyndon
Bradley Covered Bridge
  • NRHP
Lyndon
Centre Covered Bridge
  • NRHP
Lyndon
Chamberlin Mill Covered Bridge
  • NRHP
Lyndon
Greenbanks Hollow Covered Bridge
  • NRHP
Danville
Quinlan's Covered Bridge
  • NRHP
East Charlotte
Sequin Covered Bridge
  • NRHP
East Charlotte
Central Vermont Railroad Headquarters
  • NRHP
St Albans
Comstock Covered Bridge
  • NRHP
Montgomery
Douglas and Jarvis Patent Parabolic Truss Iron Bridge
  • NRHP
Highgate Falls
East Fairfield Covered Bridge
  • NRHP
East Fairfield
Fairfax Covered Bridge
  • NRHP
Fairfax
Fuller Covered Bridge
  • NRHP
Montgomery
Hectorville Covered Bridge
  • NRHP
Montgomery Center
Hopkins Covered Bridge
  • NRHP
Enosburg
Hutchins Covered Bridge
  • NRHP
Montgomery Center
Longley Covered Bridge
  • NRHP
Montgomery
Swanton Covered Railroad Bridge
  • NRHP
Swanton
West Hill Covered Bridge
  • NRHP
Montgomery
Fisher Covered Railroad Bridge
  • NRHP
Wolcott
Gates Farm Covered Bridge
  • NRHP
Cambridge
Gold Brook Covered Bridge
  • NRHP
Stowe
Grist Mill Covered Bridge
  • NRHP
Cambridge
Jaynes Covered Bridge
  • NRHP
Waterville
Mill Covered Bridge
  • NRHP
Belvidere
Montgomery Covered Bridge
  • NRHP
Waterville
Morgan Covered Bridge
  • NRHP
Belvidere
Poland Covered Bridge
  • NRHP
Cambridge Junction
Power House Covered Bridge
  • NRHP
Johnson
Red Covered Bridge
  • NRHP
Morristown
Scribner Covered Bridge
  • NRHP
Johnson
Village Covered Bridge
  • NRHP
Waterville
Waterman Covered Bridge
  • NRHP
Johnson
Braley Covered Bridge
  • NRHP
Randolph
Brookfield Village Historic District
  • NRHP
Brookfield
Cilley Covered Bridge
  • NRHP
Tunbridge
Flint Covered Bridge
  • NRHP
Tunbridge
Gifford Covered Bridge
  • NRHP
Randolph
Howe Covered Bridge
  • NRHP
Tunbridge
Kingsbury Covered Bridge
  • NRHP
Randolph
Mill Covered Bridge
  • NRHP
Tunbridge
Moxley Covered Bridge
  • NRHP
Chelsea
Thetford Center Covered Bridge
  • NRHP
Thetford
Union Village Covered Bridge
  • NRHP
Union Village
River Road Covered Bridge
  • NRHP
North Troy
Brown Covered Bridge
  • NRHP
North Clarendon
Cooley Covered Bridge
  • NRHP
Pittsford
Dean Covered Bridge
  • NRHP
Brandon
Depot Covered Bridge
  • NRHP
Pittsford
Gorham Covered Bridge
  • NRHP
Proctor
Hammond Covered Bridge
  • NRHP
Pittsford
Kingsley Covered Bridge
  • NRHP
East Clarendon
Sanderson Covered Bridge
  • NRHP
Brandon
Coburn Covered Bridge
  • NRHP
East Montpelier
Great Eddy Covered Bridge
  • NRHP
Waitsfield
Lower Cox Brook Covered Bridge
  • NRHP
Northfield Falls
Northfield Falls Covered Bridge
  • NRHP
Northfield
Pine Brook Covered Bridge
  • NRHP
Waitsfield
Slaughterhouse Covered Bridge
  • NRHP
Northfield
Stony Brook Covered Bridge
  • NRHP
Northfield
Upper Cox Brook Covered Bridge
  • NRHP
Northfield
Bartonsville Covered Bridge
  • NRHP
Bartonsville
Creamery Covered Bridge
  • NRHP
Brattleboro
East Putney Brook Stone Arch Bridge
  • NRHP
East Putney
Follett Stone Arch Bridge Historic District
  • NRHP
Townshend
Green River Covered Bridge
  • NRHP
Green River
Hall Covered Bridge
  • NRHP
Bellows Falls
Kidder Covered Bridge
  • NRHP
Grafton
Sacketts Brook Stone Arch Bridge
  • NRHP
Putney
Scott Covered Bridge
  • NRHP
Townshend
Simpsonville Stone Arch Bridge
  • NRHP
Townshend
West Dummerston Covered Bridge
  • NRHP
Dummerston
West Townshend Stone Arch Bridge
  • NRHP
Townshend
Williamsville Covered Bridge
  • NRHP
Newfane
Worrall Covered Bridge
  • NRHP
Rockingham
Best's Covered Bridge
  • NRHP
Windsor
Bowers Covered Bridge
  • NRHP
Windsor
Iron Bridge at Howard Hill Road
  • NRHP
Cavendish
Lincoln Covered Bridge
  • NRHP
Woodstock
Martin's Mill Covered Bridge
  • NRHP
Hartland
Taftsville Covered Bridge
  • NRHP
Woodstock
Upper Falls Covered Bridge
  • NRHP
Perkinsville
Willard Covered Bridge
  • NRHP
Hartland
Parlett House
  • NRHP
Bristol, TN
Center Point Covered Bridge
  • NRHP
Center Point
Sixth Street Railroad Bridge
  • NRHP
Parkersburg
La Pointe Light Station
  • NRHP
Apostle Islands National Lakeshore
Cumberland and Oxford Canal
  • NRHP
Standish
Cumberland and Oxford Canal
  • NRHP
Windham
Cumberland and Oxford Canal
  • NRHP
Gorham
Cumberland and Oxford Canal
  • NRHP
Westbrook
Eagle Island
  • NRHP
Harpswell
Portsmouth Naval Shipyard
  • NRHP
Kittery
Isles of Shoals
  • NRHP
Kittery
Holmes Creek Covered Bridge
  • NRHP
Charlotte
Larkin Covered Bridge
  • NRHP
North Tunbridge
Orne Covered Bridge
  • NRHP
Coventry
Curtis Island Light
  • NRHP
Camden
Dalton Covered Bridge
  • NRHP
Warner
Winkley Bridge
Heber Springs
Highway 79 Bridge
  • NRHP
Clarendon
Starr Historic District
  • NRHP
Richmond
Allison Mansion
  • NRHP
Indianapolis
Andrews Street Bridge
  • NRHP
City of Rochester
Court Street Bridge
  • NRHP
City of Rochester
Main Street Bridge
  • NRHP
City of Rochester
West Norristown Historic District
  • NRHP
West Norristown
Cherokee Plantation
  • NRHP
Fort Payne
Paxton Water Tower and Pump House
  • NRHP
Paxton
Ouachita River Lock and Dam No 8
  • NRHP
Calion
Kikiaola
  • NRHP
Waimea
Rock Gate
  • NRHP
Homestead
Alexander-Acacia Bridge
  • NRHP
Larkspur
Battery Hawkins
  • NRHP
Joint Base Pearl Harbor-Hickam
Battery Jackson
  • NRHP
Joint Base Pearl Harbor-Hickam
Battery Selfridge
  • NRHP
Joint Base Pearl Harbor-Hickam
George Street Bridge
  • NRHP
Aurora
New Albany and Salem Railroad Station
New Albany
Crestwood
  • NRHP
Valdosta
Minterburn Mill
  • NRHP
Vernon
Terminous Culling Chute
  • NRHP
Lodi
Shawnee Street Overpass
  • NRHP
Kansas City
Crystal Falls Dam and Power Plant
  • NRHP
Crystal Falls
Oneida Street Station
  • NRHP
Milwaukee
Matagorda Island Lighthouse
  • NRHP
Matagorda Island National Wildlife Refuge and State Natural Area
Houston Street Viaduct
  • NRHP
Dallas
Essex Company Offices and Yard
  • NRHP
Lawrence
Stock Judging Pavilion
  • NRHP
Oskaloosa
Arlington Mills Historic District
  • NRHP
Lawrence
Arlington Mills Historic District
  • NRHP
Methuen
Arlington House
  • NRHP
Richmond
Roma-San Pedro International Bridge
  • NRHP
Roma
Main Street Bridge
  • NRHP
Pawtucket
Monument Mills
  • NRHP
Great Barrington
Richland Cotton Mill
  • NRHP
Columbia
Dewey Bridge
  • NRHP
Moab
Gravel Shoals Sluice
  • NRHP
Madison
Cross Rock Rapid Sluice
  • NRHP
Madison
Eagle Falls Sluice
  • NRHP
Wentworth
Mayo River Sluice
  • NRHP
Madison
Slink Shoal Sluice and Wing Dams
  • NRHP
Madison
Tanyard Shoal Sluice
  • NRHP
Eden
Three Ledges Shoal Sluice
  • NRHP
Eden
Jacob's Creek Landing
  • NRHP
Madison
Narrows Dam and Power Plant Complex
  • NRHP
Badin
Bonnie's Bridge
  • NRHP
Cherry Hill
Bloomfield Station
  • NRHP
Bloomfield
Lockville Dam, Canal and Powerhouse
  • NRHP
Moncure
Mead Johnson River-Rail-Truck Terminal and Warehouse
  • NRHP
Evansville
Canton Viaduct
  • NRHP
Canton
Oliver Avenue Bridge
  • NRHP
Middletown
Central Woolen Mills District
  • NRHP
Uxbridge
Haraguchi Rice Mill
  • NRHP
Hanalei
Raymondville Parabolic Bridge
  • NRHP
Raymondville
Soden's Grove Bridge
  • NRHP
Emporia
Grobin Davis Mound Group
  • NRHP
Wright City
Vista Avenue Viaduct
  • NRHP
Portland
Allegheny Aqueduct
  • NRHP
Gibraltar
Puente Blanco
  • NRHP
Quebradillas
Philip Noon House
  • NRHP
Ebensburg
Prowers Bridge
  • NRHP
Prowers
F Street Bridge
  • NRHP
Salida
Miner Street Bridge
  • NRHP
Idaho Springs
Costilla Crossing Bridge
  • NRHP
Antonito
San Luis Bridge
  • NRHP
San Luis
Roubideau Bridge
Delta
Hotchkiss Bridge
Hotchkiss
14th Street Viaduct
Denver
19th Street Bridge
  • NRHP
Denver
Broadway Bridge
Denver
Bridge over Fountain Creek
  • NRHP
Manitou Springs
Howard Bridge
Howard
Portland Bridge
  • NRHP
Portland
Satank Bridge
  • NRHP
Carbondale
South Canon Bridge
  • NRHP
Glenwood Springs
Elson Bridge
El Moro
Bridge over Burro Canon
  • NRHP
Madrid
Commercial Street Bridge
Trinidad, Colorado
Black Bridge
Grand Junction
Rainbow Arch Bridge
  • NRHP
Fort Morgan
Maroon Creek Bridge
  • NRHP
Aspen
Sheely Bridge
  • NRHP
Aspen
Douglas Crossing Bridge
  • NRHP
Granada
Avondale Bridge
  • NRHP
Avondale
Huerfano Bridge
  • NRHP
Boone
Nepesta Bridge
Boone
St Charles Bridge
  • NRHP
Pueblo
Hay's Ranch Bridge
  • NRHP
Meeker
Sutherland Bridge
  • NRHP
Del Norte
Wheeler Bridge
  • NRHP
Del Norte
Masonic Park Bridge
South Fork
Four Mile Bridge
Steamboat Springs
Fort CF Smith
  • NRHP
Bowling Green
Fort Lytle
  • NRHP
Bowling Green
Fort Webb
  • NRHP
Bowling Green
Dell Rapids Water Tower
  • NRHP
Dell Rapids
Queen Bee Mill
  • NRHP
Sioux Falls
Lord Baltimore Hotel
  • NRHP
Baltimore
Sonneborn Building
  • NRHP
Baltimore
Finch Building
Aberdeen
Annisquam Bridge
  • NRHP
Gloucester
Old Mill Site Historic District
  • NRHP
Hatfield
Battery Hawkins Annex
  • NRHP
Joint Base Pearl Harbor-Hickam
Tempe Concrete Arch Highway Bridge
  • NRHP
Tempe
Pequabuck Bridge
  • NRHP
Farmington
French Cable Station Museum
  • NRHP
Orleans
Merrill's Wharf Historic District
  • NRHP
New Bedford
Hopper Gristmill Site
  • NRHP
Mahwah
Holyoke Canal System
  • NRHP
Holyoke
Granite Keystone Bridge
  • NRHP
Rockport
EJE Bridge over Shell Creek
  • NRHP
Shell
EJZ Bridge over Shoshone River
  • NRHP
Lovell
DMJ Pick Bridge
  • NRHP
Saratoga, WY
ELS Bridge over Big Wind River
  • NRHP
Dubois
BMU Bridge over Wind River
  • NRHP
Ethete
ELY Wind River Diversion Dam Bridge
  • NRHP
Morton
CQA Four Mile Bridge
  • NRHP
Thermopolis
EFP Bridge over Owl Creek
  • NRHP
Thermopolis
EDL Peloux Bridge
  • NRHP
Buffalo
EDZ Irigary Bridge
  • NRHP
Sussex
DUX Bessemer Bend Bridge
  • NRHP
Bessemer Bend
DSD Bridge over Cheyenne River
  • NRHP
Riverview
Hayden Arch Bridge
  • NRHP
Cody
EWZ Bridge over East Channel of Laramie River
  • NRHP
Wheatland
EAU Arvada Bridge
  • NRHP
Arvada
EBF Bridge over Powder River
  • NRHP
Leiter
ECS Bridge over Big Goose Creek
  • NRHP
Sheridan
ECR Kooi Bridge
  • NRHP
Monarch
DDZ Bridge over New Fork River
  • NRHP
Boulder
ENP Bridge over Green River
  • NRHP
Daniel
ETD Bridge over Green River
  • NRHP
Fontenelle
ERT Bridge over Black's Fork
  • NRHP
Fort Bridger
Hoosac Tunnel
  • NRHP
North Adams
Hoosac Tunnel
  • NRHP
Florida
Gen Sylvanus Thayer House
  • NRHP
Braintree
Miami-Erie Canal Lock No 70
  • NRHP
Huber Heights
Goodman Brothers and Hinlein Company
  • NRHP
Philadelphia
Bay Road
  • NRHP
Easton
New Portland Wire Bridge
  • NRHP
New Portland
DOE Bridge over Laramie River
  • NRHP
Bosler
DFU Elk Mountain Bridge
  • NRHP
Elk Mountain
DML-Butler Bridge
  • NRHP
Encampment, WY
DXN Bridge over Missouri River
  • NRHP
Hulett
AJX Bridge over South Fork and Powder River
  • NRHP
Kaycee
CKW Bridge over Powder River
  • NRHP
Arvada
ETR Big Island Bridge
  • NRHP
Green River
Congress Building
  • NRHP
Miami
Cedar Swamp Covered Bridge
  • NRHP
West Salisbury
Winthrop Building
  • NRHP
Boston
Atherton Bridge
  • NRHP
Lancaster
Ponakin Bridge
  • NRHP
Lancaster
Elm Street Fire Station
  • NRHP
Gardner
Middlefield-Becket Stone Arch Railroad Bridge District
  • NRHP
Chester
Middlefield-Becket Stone Arch Railroad Bridge District
  • NRHP
Becket
Middlefield-Becket Stone Arch Railroad Bridge District
  • NRHP
Middlefield
Lane's Run Historic District
  • NRHP
Georgetown
Choate Bridge
  • NRHP
Ipswich
Essex Company Machine Shop
  • NRHP
Lawrence
Great Stone Dam
  • NRHP
Lawrence
High Service Water Tower and Reservoir
  • NRHP
Lawrence
The New Hampshire
  • NRHP
Manchester-by-the-Sea
Sparkill Creek Drawbridge
  • NRHP
Piermont
Loammi Baldwin Mansion
  • NRHP
Woburn
George Kunhardt Estate
  • NRHP
North Andover
Octagon House
  • NRHP
Stamford
Fort Pickering
  • NRHP
Salem
Seaside Park
  • NRHP
Bridgeport
Sterling Block-Bishop Arcade
  • NRHP
Bridgeport
Willimantic Footbridge
  • NRHP
Windham
Water Street - Darden Road Bridge
  • NRHP
South Bend
Echo Bridge
  • NRHP
Newton
Echo Bridge
  • NRHP
Needham
Comstock's Bridge
  • NRHP
East Hampton
Old Covered Bridge
  • NRHP
Sheffield
Rogerson's Village Historic District
  • NRHP
North Uxbridge
Old Higgins Farm Windmill
  • NRHP
Brewster
Bull's Bridge
  • NRHP
Kent
West Cornwall Bridge
  • NRHP
West Cornwall
Farmington Canal Lock
  • NRHP
Cheshire
Main Sawmill
  • NRHP
Ledyard
Farmington Canal Lock No 13
  • NRHP
Hamden
Collinsville Historic District
  • NRHP
Collinsville
Fort Nathan Hale
  • NRHP
New Haven
Enfield Canal
  • NRHP
Windsor Locks
Gamel Hexadecagon Barn
  • NRHP
North Collins
Stonington Harbor Lighthouse
  • NRHP
Stonington
Boardman's Bridge
  • NRHP
New Milford
Lover's Leap Bridge
  • NRHP
New Milford
Farmington River Railroad Bridge
  • NRHP
Windsor
Sharon Valley Historic District
  • NRHP
Sharon
Ida Street Viaduct
  • NRHP
Cincinnati
Cleveland Arcade Cleveland
Smith Road Bridge
  • NRHP
Bucyrus
Labo Del Rio Bridge
  • NRHP
Arboles
Coke Ovens
  • NRHP
Wilkeson
Blewett Arrastra
  • NRHP
Cashmere
Fire Station No 25
  • NRHP
Seattle
Okanogan Project: Conconully Resevoir Dam
  • NRHP
Conconully
Dybdall Gristmill
  • NRHP
Cheney
Chandeleur Light
  • NRHP
Chalmette
Welle Hess Covered Bridge No S1
Grassmere Park
Building No 105, Boeing Airplane Company
  • NRHP
Seattle
Indianapolis Union Station-Wholesale District
  • NRHP
Indianapolis
East Main Street Bridge
  • NRHP
Corbin
East Main Street Bridge
  • NRHP
Corbin
Enloe Dam and Powerplant
  • NRHP
Oroville
Camp Six
  • NRHP
Tacoma
Reburn, Thomas, Polygonal Barn
  • NRHP
New Albin
Round Barn, Bruce Township Section 3
  • NRHP
Eagle Center
Round Barn, Washington Township
  • NRHP
Janesville
Round Barn, Dubuque Township
  • NRHP
Dubuque
Thomsen Round Barn
  • NRHP
Armstrong
Spotts Round Barn
  • NRHP
Charles City
Tillamook Rock Lighthouse
  • NRHP
Ecola State Park
Octagon Barn, Richland Township
  • NRHP
Jamaica, Iowa
Oakland, William, Round Barn
  • NRHP
Blairsburg
Secrest Octagon Barn
  • NRHP
Downey
Waveland Round Barn
  • NRHP
Cushing
Round Barn, Buckingham Township
  • NRHP
Buckingham
Young, John W, Round Barn
  • NRHP
Traer
Wickfield Round Barn
  • NRHP
Cantril
Octagon Barn, Otter Township
  • NRHP
Milo
Johnson, Thomas, Polygonal Barn
  • NRHP
Wellman
Round Barn, Washington Township
  • NRHP
Sciola
McCoy Polygonal Barn
  • NRHP
Hepburn
Burbank Homestead Waterwheel
  • NRHP
Cashmere
Monroe Street Bridge
  • NRHP
Spokane
Johnson Bridge
  • NRHP
Lowden
Rock Island Railroad Bridge
  • NRHP
Malaga
Rock Island Railroad Bridge
  • NRHP
Rock Island
14th Avenue South Bridge
  • NRHP
Seattle
McMillin Bridge
  • NRHP
Puyallup
Portland and Southwestern Railroad Tunnel
  • NRHP
Scappoose
C C Van Arsdol House
  • NRHP
Clarkston
Gold Coast Historic District
  • NRHP
Chicago
Smith's Irrigation Ditch
  • NRHP
Denver
Moore Theatre and Hotel
  • NRHP
Seattle
Aerial Lift Bridge
  • NRHP
Duluth
Philip Buehner House
  • NRHP
Portland
Hanalei Pier
  • NRHP
Hanalei
Freeport Bowstring Arch Bridge
Freeport
Meier, Fred W, Round Barn
  • NRHP
Ludlow
Round Barn, Bruce Township Section 6
  • NRHP
La Porte
McKenzie, Erza, Round Barn
  • NRHP
Hazleton
Fobes Octagon Barn
  • NRHP
Lanesboro
Ross, Seymour, Round Barn
Gillet Grove
Round Barn, Millville Township
  • NRHP
Millville
Brooks Round Barn
  • NRHP
Charles City
Wood, Herman, Round Barn
  • NRHP
Iowa Falls
Frantz Round Barn
  • NRHP
Grand Junction
Jefferson Substation
  • NRHP
Portland
Cappelen Memorial Bridge
  • NRHP
Minneapolis
Holtkamp Round Barn
  • NRHP
Salem
Polygonal Barn, New Oregon Township
  • NRHP
Cresco
Nebergall 'Knoll Crest' Round Barn
  • NRHP
Blue Grass
Plagmann Round Barn
  • NRHP
Conroy
Dyas Hexagonal Barn
  • NRHP
Bellevue
Polygonal Barn, Van Buren Township
  • NRHP
Van Buren
Polygonal Barn, Lincoln Township
  • NRHP
West Liberty
Longbottom Polygonal Barn
Titonka
Round Barn, Cooper Township
  • NRHP
Mapleton
Eckle Round Barn
  • NRHP
Shelby
Oahu Railway and Land Company Right-of-Way
  • NRHP
Nanakuli-Maili
R W Meyer Sugar Mill
  • NRHP
Kalae
Fort Stevens
  • NRHP
Fort Stevens State Park
Bridgeport Covered Bridge
  • NRHP
French Corral
Ahole Holua Complex
  • NRHP
Milolii
West Point Light Station
  • NRHP
Fort Lawton
Cascade Locks Marine Park
  • NRHP
Cascade Locks
Stevens Pass Historic District
  • NRHP
Stevens Pass
Aurora Avenue Bridge
  • NRHP
Seattle
Horseshoe Bend Placer Claim
  • NRHP
Sultan
Monteith Historic District
  • NRHP
Albany
Rock O' the Range Bridge
  • NRHP
Bend
Harris Bridge
  • NRHP
Wren
Sandy Creek Bridge
  • NRHP
Remote
Hayden Bridge
  • NRHP
Alsea
Milo Academy Bridge
  • NRHP
Days Creek
Wimer Bridge
Wimer
McKee Bridge
  • NRHP
Ruch
Lake Creek Bridge
  • NRHP
Greenleaf
Ernest Bridge
  • NRHP
Marcola
Goodpasture Bridge
  • NRHP
Vida
Belknap Bridge
  • NRHP
Rainbow
Pengra Bridge
  • NRHP
Jasper
Unity Bridge
  • NRHP
Lowell
Currin Bridge
  • NRHP
Cottage Grove
Dorena Bridge
  • NRHP
Dorena
Mosby Creek Bridge
  • NRHP
Cottage Grove
Stewart Bridge
  • NRHP
Walden
Coyote Creek Bridge
  • NRHP
Crow
Deadwood Creek Bridge
  • NRHP
Swisshome
Chitwood Bridge
  • NRHP
Chitwood
North Fork of the Yachats Bridge
  • NRHP
Yachats
Fisher School Bridge
  • NRHP
Fisher
Short Bridge
  • NRHP
Cascadia
Larwood Bridge
  • NRHP
Crabtree
Crawfordsville Bridge
  • NRHP
Crawfordsville
Hannah Bridge
  • NRHP
Scio
Gallon House Bridge
  • NRHP
Silverton
Ritner Creek Bridge
  • NRHP
Pedee
Priestly's Hydraulic Ram
  • NRHP
Hagerman
Swan Falls Dam and Power Plant
  • NRHP
Murphy
Agana Spanish Bridge
  • NRHP
Hagatna
Taleyfac Spanish Bridge
  • NRHP
Agat
Moore-Cunningham House
  • NRHP
Boise
Arboretum Sewer Trestle
  • NRHP
Seattle
Minidoka Dam and Power Plant
  • NRHP
Minidoka
Elkhead Stone Arch Bridge
Pelham
Diversion Dam and Deer Flat Embankments
  • NRHP
Boise
Diversion Dam and Deer Flat Embankments
  • NRHP
Boise
Lost Creek Bridge
  • NRHP
Lakecreek
Artesian Water Co Pumphouse and Wells
  • NRHP
Boise
Great Falls of Paterson, UM Historic District Paterson
Boley Building
  • NRHP
Kansas City
Fort Granger
  • NRHP
Franklin
White Bird Grade
  • NRHP
White Bird
Brown Tie and Lumber Company Mill and Burner
McCall
Eklutna Power Plant
  • NRHP
Anchorage
Leleahina Heiau
  • NRHP
Kaneohe
Small Heiau
  • NRHP
Koolauloa
Hennepin Canal Historic District
  • NRHP
Hennepin
Walter E Bixby House
  • NRHP
Kansas City
Grand Avenue Water Tower
  • NRHP
City of St Louis
Ott's Assay Office
  • NRHP
Nevada City
Louis Curtiss Studio Building
  • NRHP
Kansas City
Loew's Midland Theater-Midland Building
  • NRHP
Kansas City
Sandy Creek Covered Bridge
  • NRHP
Hillsboro
Linwood Lawn
  • NRHP
Lexington
Garden of Eden
  • NRHP
Lucas
Waldo Water Tower
  • NRHP
Kansas City
Old Colony Buildings
  • NRHP
Chicago
Cathedral of the Immaculate Conception
  • NRHP
Denver
Buildings at 860-880 Lake Shore Drive Chicago
Ware-Hardwick Covered Bridge
  • NRHP
Hardwick
Ware-Hardwick Covered Bridge
  • NRHP
Ware
Caruthersville Water Tower
  • NRHP
Caruthersville
Chapin and Gore Building
  • NRHP
Chicago
Chicago Avenue Water Tower and Pumping Station
  • NRHP
Chicago
Ideal Building
  • NRHP
Denver
Barretts Tunnels
  • NRHP
Kirkwood
Fisher Building
  • NRHP
Chicago
Union Covered Bridge
  • NRHP
Paris
Kehilath Anshe Ma'ariv Synagogue
  • NRHP
Chicago
Babylon Bend Bridge
  • NRHP
Ellisville
Indian Ford Bridge
  • NRHP
London Mills
London Mills Bridge
  • NRHP
London Mills
Seville Bridge
  • NRHP
Seville
Bernadotte Bridge
  • NRHP
Smithfield
Buckeye Bridge
  • NRHP
Smithfield
Tartar's Ferry Bridge
  • NRHP
Smithfield
Guernsey Lake Park
  • NRHP
Guernsey
Burfordville Covered Bridge
  • NRHP
Burfordville
Bridge in Cumberland Township
  • NRHP
Greenmount
Bridge in Shaler Township
  • NRHP
Glenshaw
Bridge between Madison and Mahoning Townships
  • NRHP
Deanville
Colwell Cut Viaduct
  • NRHP
Seminole
Bridge in South Beaver Township
  • NRHP
Cannelton
Bridge in Snake Spring Township
  • NRHP
Bedford
Barto Bridge
  • NRHP
Barto
Dauberville Bridge
  • NRHP
Dauberville
Ironstone Bridge
  • NRHP
Morysville
Lindbergh Viaduct
  • NRHP
Reading
S Bridge
  • NRHP
Sheridan
Bridge in Albany Township
  • NRHP
Steinsville
Bridge in Solebury Township
  • NRHP
Carversville
Campbell's Bridge
  • NRHP
Milford Square
Newtown Creek Bridge
  • NRHP
Newtown Township
Bridge in Tinicum Township
  • NRHP
Point Pleasant
Bridge in Yardley Borough
  • NRHP
Scammells Corner
Bridge in Buckingham Township
  • NRHP
Wycombe
Black Rock Bridge
  • NRHP
Mont Clare
Black Rock Bridge
  • NRHP
Mont Clare
Bridge in New Garden Township
  • NRHP
Landenberg
Lenape Bridge
  • NRHP
Lenape
Bridge in East Fallowfield Township
  • NRHP
Mortonville
Bridge in Tredyffrin Township
  • NRHP
Port Kennedy
County Bridge No 101
  • NRHP
Rock Run
Bridge in Greenwood Township
  • NRHP
Bells Landing
Hogback Bridge
  • NRHP
Curwensville
Bridge in Westover Borough
  • NRHP
Westover
Bridge in Fishing Creek Township
  • NRHP
Bendertown
Bridge in East Fallowfield Township
  • NRHP
Atlantic
Cambridge Springs Bridge
  • NRHP
Cambridge Springs
Bridge in West Mead Township
  • NRHP
Center Road Corners
Bridge in Rockdale Township
  • NRHP
Millers Station
Bridge in Oil Creek Township
  • NRHP
Titusville
Market Street Bridge
  • NRHP
Wormleysburg
Market Street Bridge
  • NRHP
Harrisburg
Bridge in Lykens Township No 2
  • NRHP
Fearnot
Soldiers and Sailors Memorial Bridge
  • NRHP
Harrisburg
Bridge in Reed Township
  • NRHP
Inglenook
Bridge in Radnor Township No 1
  • NRHP
Broomall
Second Street Bridge
  • NRHP
Chester
Bridge in Radnor Township No 2
  • NRHP
Villanova
Layton Bridge
  • NRHP
Layton
West Hickory Bridge
  • NRHP
West Hickory
McClay's Twin Bridge (East)
  • NRHP
Middle Spring
Bridge in Metal Township
  • NRHP
Willow Hill
Marion Bridge
  • NRHP
Point Marion
Marion Bridge
  • NRHP
Point Marion
Bridge in Franklin Township
  • NRHP
Franklin Township
Bridge in West Wheatfield Township
  • NRHP
Robinson
Harrison Avenue Bridge
  • NRHP
Scranton
Old Columbia-Wrightsville Bridge
  • NRHP
Columbia
Old Columbia-Wrightsville Bridge
  • NRHP
Wrightsville
Bridge in West Earl Township
  • NRHP
Brownstown
Hammer Creek Bridge
  • NRHP
Brunnerville
Meyers, Albertus L, Bridge
  • NRHP
Allentown
Centennial Bridge
  • NRHP
Center Valley
Bridge in Heidelberg Township
  • NRHP
Germansville
Cold Spring Bridge
  • NRHP
North Hampton
Bridge in Lynn Township
Steinsville
Frantz's Bridge
  • NRHP
Weidasville
Market Street Bridge
  • NRHP
Kingston
Market Street Bridge
  • NRHP
Wilkes-Barre
Bridge in City of Wilkes-Barre
  • NRHP
Wilkes-Barre
Bridge in Lewis Township
  • NRHP
Bodines
Bridge in Brown Township
  • NRHP
Hillborn
Bridge in Porter Township
  • NRHP
Jersey Shore
Bridge in French Creek Township
  • NRHP
Carlton
Quaker Bridge
  • NRHP
Greenville
Perkiomen Bridge
  • NRHP
Collegeville
Bridge in Franconia Township
  • NRHP
Elvoy
Bridge in Upper Frederick Township
  • NRHP
Fagleysville
Bryn Athyn-Lower Moreland Bridge
  • NRHP
Lower Moreland
Sutch Road Bridge in Marlborough Township
  • NRHP
Milford
County Bridge No 54
  • NRHP
Prospectville
Swamp Creek Road Bridge
  • NRHP
Sumneytown
Bridge in Hatfield Township
  • NRHP
Unionville
Bridge in Upper Fredrick Township
  • NRHP
Zieglersville
Bridge in Bangor Borough
  • NRHP
Bangor
Bridge in Williams Township
  • NRHP
Stouts
Watsontown River Bridge
  • NRHP
Watsontown
Watsontown River Bridge
  • NRHP
White Deer
Bridge in Newport Borough
  • NRHP
Newport
Adams Avenue Bridge in Philadelphia
  • NRHP
Philadelphia
Belmont Avenue Bridge in Philadelphia
  • NRHP
Philadelphia
City Line Avenue Bridge
  • NRHP
Philadelphia
Frankford Avenue Bridge
  • NRHP
Philadelphia
Frankford Avenue Bridge
  • NRHP
Philadelphia
Holme Avenue Bridge
  • NRHP
Philadelphia
Ridge Avenue Bridge in Philadelphia
  • NRHP
Philadelphia
Thirty-third Street Bridge in Philadelphia
  • NRHP
Philadelphia
Wissahickon Memorial Bridge
  • NRHP
Philadelphia
Bridge between Monroe and Penn Townships
  • NRHP
Selinsgrove
Bridge in Clinton Township
  • NRHP
Kennerdell
Bridge in Gibson Borough
  • NRHP
South Gibson
Pithole Stone Arch
  • NRHP
Oleopolis
Bridge in Cherrytree Township
  • NRHP
Titusville
Bridge in Dreher Township
  • NRHP
Haags Mill
Bridge in Nicholson Township
  • NRHP
Starkville
Bridge in Washington Township
  • NRHP
Kralltown
Kise Mill Bridge
  • NRHP
Woodside
Hocking Valley Railway Historic District
  • NRHP
Nelsonville
Hocking Valley Railway Historic District
  • NRHP
Logan
Horace M Tallman House
  • NRHP
Shelbyville
Silver King Ore Loading Station
Park City
Bear Mountain Bridge and Toll House
  • NRHP
Stony Point
Bear Mountain Bridge and Toll House
  • NRHP
Peekskill
Beebe Windmill
  • NRHP
Southampton
Springfield Bridge
  • NRHP
Springfield
Van Wyck-Lefferts Tide Mill
  • NRHP
Huntington
New Amsterdam Theater
  • NRHP
New York City
Bridge in Johnstown City
  • NRHP
Johnstown
Isle Royale Light Station
  • NRHP
Isle Royale
Warrenton Woolen Mill
  • NRHP
Torrington
Rock of Ages Light Station
  • NRHP
Isle Royale
Grand Avenue Bridge
Neillsville
Crabtree Creek-Hoffman Covered Bridge
  • NRHP
Crabtree
Thomas Creek-Gilkey Covered Bridge
  • NRHP
Crabtree
Thomas Creek-Shimanek Covered Bridge
  • NRHP
Scio
Songo Lock
  • NRHP
Naples
Morse Bridge
  • NRHP
Bangor
Cable Mountain Draw Works
  • NRHP
Zion National Park
Diversion Tunnel
  • NRHP
Seward
Deception Pass
  • NRHP
Anacortes
Beeson Bridge
  • NRHP
Marshall
Fernbridge
  • NRHP
Fernbridge
Firescald Creek Stone Arch Bridge
  • NRHP
Altamont
Scott Creek Stone Arch Bridge
  • NRHP
Coalmont
Anaconda Copper Mining Company Smoke Stack
  • NRHP
Anaconda
Thomas Mill Covered Bridge
  • NRHP
Philadelphia
USS NAUTILUS (submarine) Groton
WEYMOUTH (schooner)
  • NRHP
Hamilton Township
USS LING
  • NRHP
Hackensack
STATE OF PENNSYLVANIA (steamboat)
  • NRHP
Wilmington
MAGGIE S MYERS (schooner)
  • NRHP
Leipsic
SS HELLAS LIBERTY
Piraeus
NOBSKA (steamship)
  • NRHP
Baltimore
PATRICIA (log canoe)
  • NRHP
Cambridge
OLIVER'S GIFT (log canoe)
  • NRHP
Davidsonville
ISLAND IMAGE (log canoe)
  • NRHP
Chestertown
MYSTERY (log canoe)
  • NRHP
Kingstown
BILLIE P HALL (log canoe)
  • NRHP
Oxford
S C DOBSON (log canoe)
  • NRHP
Oxford
SANDY (log canoe)
  • NRHP
Sherwood
ISLAND BIRD (log canoe)
  • NRHP
St Michaels
ISLAND BLOSSOM (log canoe)
  • NRHP
St Michaels
JAY DEE (log canoe)
  • NRHP
St Michaels
NODDY (log canoe)
  • NRHP
Chestertown
EDMEE S (log canoe)
  • NRHP
St Michaels
MAGIC (log canoe)
  • NRHP
St Michaels
PERSISTENCE (log canoe)
  • NRHP
St Michaels
ROVER (log canoe)
  • NRHP
St Michaels
FLYING CLOUD (log canoe)
  • NRHP
Wittman
USS TEXAS Houston
EUREKA San Francisco Maritime National Historical Park
SS CATALINA
  • NRHP
Los Angeles
SS JEREMIAH O'BRIEN San Francisco
USS NORTH CAROLINA
  • NRHP
Wilmington
SILVER HEEL (log canoe)
  • NRHP
Chestertown
JOHN W HUBBARD (sternwheeler)
  • NRHP
Covington
BARNEGAT (lightship)
  • NRHP
Camden
BINGHAMTON (ferryboat)
  • NRHP
Edgewater
KATHERINE M LEE (Schooner)
  • NRHP
Leipsic
HUGHES FLYING BOAT (HERCULES)
McMinnville
JAMES P PEARSON (steamboat)
Winona
SAVANNAH (nuclear ship) Baltimore
HERCULES (tugboat) San Francisco Maritime National Historical Park
Nickel Plate Road Steam Locomotive No 587
  • NRHP
Beech Grove
Shay Locomotive 549
  • NRHP
Cadillac
Fallasburg Covered Bridge
  • NRHP
Lowell
Granite Island Light Station
  • NRHP
Marquette
Granite Island Light Station
  • NRHP
Lake Superior
Wilbur F Davidson House
  • NRHP
Port Huron
Variable Density Tunnel Hampton
Full Scale Tunnel Hampton
Eight-Foot High Speed Tunnel Hampton
Lunar Landing Research Facility Hampton
Harvard Stadium Boston
Crystal Spring Steam Pumping Station
  • NRHP
Roanoke
Indianapolis Motor Speedway Speedway
Second Railroad Car No 21
  • NRHP
Carson City
Virginia and Truckee RR Engines No 18, The Dayton and No 22, The Inyo
  • NRHP
Carson City
Texas and Pacific Steam Locomotive No 610
  • NRHP
Fort Worth
Grant Steam Locomotive No 223
  • NRHP
Salt Lake City
Engine No 463
  • NRHP
Antonito
Rio Grande Engine No 168
  • NRHP
Colorado Springs
Waialua Agricultural Company Engine No 6
  • NRHP
Ewa
Waialua Agricultural Company Engine No 6
  • NRHP
The Hawaiian Railway Society
Lion, The (locomotive)
  • NRHP
Machias
Mission Beach Roller Coaster San Diego
Atlantic City Convention Hall Atlantic City
West Baden Springs Hotel West Baden
Temnac P-38G Lightning
  • NRHP
Attu Island
Temnac P-38G Lightning
  • NRHP
Joint Base Elmendorf-Richardson
Hercules and Coach No 2
  • NRHP
Mammoth Cave National Park
Saturn V Space Vehicle Huntsville
Kahaluu Taro Lo'i
  • NRHP
Kahaluu
Gaston's Mill-Lock No 36, Sandy And Beaver Canal District
  • NRHP
Clarkson
Cabin John Aqueduct
  • NRHP
Glen Echo
Washington Aqueduct Washington, DC
Washington Aqueduct Great Falls
Ehrhart's Mill Historic District
  • NRHP
Hellertown
Denver and Rio Grande Railroad San Juan Extension
  • NRHP
Antonito
Denver and Rio Grande Railroad San Juan Extension
  • NRHP
Chama
Denver and Rio Grande Railroad San Juan Extension
  • NRHP
Antonito
Eighth Avenue South Reservoir
  • NRHP
Nashville
Faro di Punta Borinquen
  • NRHP
Aguadilla
Ellen Furnace Site (38CK68)
  • NRHP
Gaffney
King's Creek Furnace Site (38CK71)
  • NRHP
Kings Creek
Smuggler Mine
  • NRHP
Aspen
Second Street Bridge
Galesville
Low's Bridge
Sangerville
Rush Historic District Yellville
Pumping Station Bridge
Ellendale
Chief Agriculturist House
  • NRHP
Kolonia
Nan Madol Temwen Island
Tonotan Guns and Caves
  • NRHP
Weno
Lebanon Road Stone Arch Bridge
  • NRHP
Nashville
Omohundro Water Filtration Complex District
  • NRHP
Nashville
Estate Hogansborg
  • NRHP
Frederiksted
Fortsberg
  • NRHP
Virgin Islands National Park
Hassel Island Historic District (Boundary Increase)
  • NRHP
Charlotte Amalie
Waherak MAIHER
  • NRHP
Chalan Kanoa (Saipan)
Unai Lagua Japanese Defense Pillbox
  • NRHP
San Roque
Japanese Coastal Defense Gun
  • NRHP
Songsong
The San Fernando Building
  • NRHP
Los Angeles
Herschel-Spillman Two-Row Portable Menagerie Carousel
  • NRHP
Story City
WILLIAM S MITCHELL (dredge)
  • NRHP
Newport
Longview Bridge
  • NRHP
Longview
Longview Bridge
  • NRHP
Rainier
Passaic Machine Works-Watts, Campbell and Company
  • NRHP
Newark
Denver, Northwestern and Pacific Railway Historic District
  • NRHP
East Portal
Denver, Northwestern and Pacific Railway Historic District
  • NRHP
Winter Park
Denver, Northwestern and Pacific Railway Historic District
  • NRHP
Eldora
Edwin H Hanford House
  • NRHP
Oakesdale
Maguire, Don, Duplex
  • NRHP
Ogden
Alcatraz San Francisco
Cleveland West Pierhead Light
  • NRHP
Cleveland
Jackson's Furnace Site (38YK217)
  • NRHP
Smyrna
Toledo Harbor Light
  • NRHP
Toledo
West Sister Island Light
  • NRHP
Toledo
Niles Car and Manufacturing Company Electric Railway Interurban Combine No 21
  • NRHP
Worthington
New Castle and Frenchtown Railroad Right-of-Way
  • NRHP
Frenchtown
New Castle and Frenchtown Railroad Right-of-Way
  • NRHP
Porter
Cowpens Furnace Site (38CK73)
  • NRHP
Gaffney
Plankinton-Wells-Water Street Historic District
  • NRHP
Milwaukee
Battery John Barlow and Saxton
  • NRHP
Los Angeles
Foote's Crossing Road
  • NRHP
North Columbia
Foote's Crossing Road
  • NRHP
Alleghany
Boca Dam
  • NRHP
Truckee
Derby Diversion Dam
  • NRHP
Sparks
Lake Tahoe Dam
  • NRHP
Tahoe City
CSS GEORGIA (ironclad)
  • NRHP
Savannah
Ebenezer Mill
  • NRHP
Knoxville
Fort Thomas Military Reservation District
  • NRHP
Fort Thomas
ALEXANDER HAMILTON (steamship)
  • NRHP
Atlantic Highlands
New Castle Ice Piers
  • NRHP
New Castle
Old Courthouse Jefferson National Expansion Memorial
Spanish Dikes
  • NRHP
Hagatna
Taelayag Spanish Bridge
  • NRHP
Agat
Chena Pump House
  • NRHP
Fairbanks
Knight's Foundry and Shops
  • NRHP
Sutter Creek
The Kink
  • NRHP
Fairbanks
Church Hill Road Covered Bridge
  • NRHP
Lisbon
Cincinnati Street Gas Lamps
  • NRHP
Cincinnati
Doe Run Creek Historic District
  • NRHP
Brandenburg
Cedar Islands Archeological District
  • NRHP
Pierre
Spring House
White Springs
Chicago Stock Exchange Building
Chicago
Proctor Mountain Ski Lift
  • NRHP
Sun Valley
Imes Covered Bridge
  • NRHP
St Charles
East Fork Covered Bridge
Fallsburg
Fish Creek Dam
  • NRHP
Carey
Copper River and Northwestern Railway Main Line
  • NRHP
Chitina
Lutcher Memorial Church Building
  • NRHP
Orange
Oaklawn Bridge and Waiting Station
  • NRHP
South Pasadena
Long Cane Covered Bridge
Troy
Susitna River Bridge
  • NRHP
Gold Creek
Douthat State Park Historic District
  • NRHP
Millboro
Douthat State Park Historic District
  • NRHP
Millboro
Charles Ilfield Company Warehouse
Albuquerque
Pioneer Square-Skid Road District (Boundary Increase) Seattle
Tin Top Suspension Bridge
Tin Top
Big Gap Flume
  • NRHP
Groveland
Green Brae Brick Yard
  • NRHP
Larkspur
Municipal Pier
  • NRHP
Chicago
Central of Georgia Railway Company Shop Property Savannah
Central of Georgia Depot and Trainshed Savannah
Central of Georgia Railroad: Savannah Shops and Terminal Facilities Savannah
Thompson Falls Hydroelectric Dam Historic District
  • NRHP
Thompson Falls
Faro del Puerto de Ponce
  • NRHP
Ponce
Faro de Punta de las Figuras
  • NRHP
Guayama
Faro de Punta de la Tuna
  • NRHP
Guayama
Faro Isla de Culebritas
  • NRHP
Culebra
Mount Rushmore National Memorial South Dakota
Bernard Corrigan House
  • NRHP
Kansas City
Dalton Brick Company
  • NRHP
Hopkinsville
Parks Covered Bridge
  • NRHP
Chalfunts
Belle Hall Covered Bridge
  • NRHP
Croton
Salt Creek Covered Bridge
  • NRHP
Norwich
Harra Covered Bridge
  • NRHP
Watertown
Hildreth Covered Bridge
  • NRHP
Marietta
Hune Covered Bridge
  • NRHP
Dart
Rinard Covered Bridge
  • NRHP
Marietta
Shinn Covered Bridge
  • NRHP
Bartlett
Ballard Road Covered Bridge
  • NRHP
Jamestown
Rock Mill Covered Bridge
  • NRHP
Rock Mill
Eagle Creek Covered Bridge
  • NRHP
Decatur
Root Covered Bridge
  • NRHP
Decaturville
Kelso Bowstring Arch Truss Bridge
  • NRHP
Kelso
Paw Paw Creek Bridge No 52
  • NRHP
Chili
Waverly Street Bridge
  • NRHP
Westernport
Bandelier National Monument New Mexico
S Bridge II
  • NRHP
New Concord
Great Northern Railway Company Bridge
  • NRHP
Cass Lake
Crescent Hill Reservoir
  • NRHP
Louisville
Wilson's Bridge
  • NRHP
Hagerstown
Snake Alley
  • NRHP
Burlington
Chesapeake and Ohio Canal National Historical Park Oldtown
Chesapeake and Ohio Canal National Historical Park Point of Rocks
Chesapeake and Ohio Canal National Historical Park Brunswick
Chesapeake and Ohio Canal National Historical Park Potomac
Chesapeake and Ohio Canal National Historical Park Seneca
Chesapeake and Ohio Canal National Historical Park Poolesville
Chesapeake and Ohio Canal National Historical Park Huncock
Chesapeake and Ohio Canal National Historical Park Antietam
Chesapeake and Ohio Canal National Historical Park Sharpsburg
Chesapeake and Ohio Canal National Historical Park Cedar Grove
Chesapeake and Ohio Canal National Historical Park Shepardstown
Chesapeake and Ohio Canal National Historical Park Paw Paw
Chesapeake and Ohio Canal National Historical Park Harpers Ferry
East Greenwich Historic District
  • NRHP
Warwick
East Greenwich Historic District
  • NRHP
East Greenwich
Boulder Hot Springs Hotel
  • NRHP
Boulder
Big Hole Pumpstation
  • NRHP
Divide
Oregon Railway and Navigation Company Bridge
  • NRHP
Coburg
Chattanooga Union Station
Chattanooga
Lightner Museum
  • NRHP
St Augustine
Ellis County Courthouse Historic District
  • NRHP
Waxahachie
Lynchburg Covered Bridge
  • NRHP
Lynchburg
Lynchburg Covered Bridge
  • NRHP
Lynchburg
Leiter I Building
Chicago
Droemer Brickyard Site
  • NRHP
Giddings
Westmoreland Tunnel
  • NRHP
Westmoreland
Duncan Mills Bridge
  • NRHP
Lewistown
SS SAN MATEO
  • NRHP
Seattle
Redstone Test Stand Huntsville
Space Launch Complex 10 Vandenberg Air Force Base
Willamette Falls Locks
  • NRHP
West Linn
Chittenden Locks and Lake Washington Ship Canal
  • NRHP
Seattle
Volunteer Park
  • NRHP
Seattle
Buffalo Bill Dam
  • NRHP
Cody
Victoria Grist Windmill
  • NRHP
Victoria
San Juan Island, Lime Kiln Light Station
  • NRHP
Friday Harbor
Ryan Ranch
  • NRHP
Saratoga, WY
Old Town Bridge
  • NRHP
Wayland
Bayou Plaquemine Lock
  • NRHP
Plaquemine
Key West Historic District
  • NRHP
Key West
Empire State Building New York City
USS MONITOR
Kennecott Mines Wrangell - St Elias National Park and Preserve
Nott Memorial Hall Schenectady
Parvin Bridge
  • NRHP
Dexter
Office Bridge
  • NRHP
Westfir
Grave Creek Bridge
  • NRHP
Sunny Valley
Lowell Bridge
  • NRHP
Lowell
Wendling Bridge
  • NRHP
Wendling
Wildcat Creek Bridge
  • NRHP
Walton
River Road Stone Arch Railroad Bridge
  • NRHP
Colchester
Vancouver-Portland Bridge
  • NRHP
Portland
Vancouver-Portland Bridge
  • NRHP
Vancouver
Columbia River Highway Historic District
  • NRHP
Cascade Locks
Columbia River Highway Historic District
  • NRHP
Hood River
Columbia River Highway Historic District
  • NRHP
Troutdale
Columbia River Highway Historic District
  • NRHP
Mosier
Buck, W J, Polygonal Barn
  • NRHP
Diagonal
Hattie (Gold Bug), Priest and Silver Pine Mines and Stampmill
  • NRHP
Placerville
Elmbrook Farm Barn
  • NRHP
Presque Isle
Taylor, David W, Model Basin
  • NRHP
Bethesda
Twenty-Five Foot Space Simulator Pasadena
Turtle Creek Culvert and Embankment
New Bern
Ptarmigan Tunnel
  • NRHP
Glacier National Park
Cape Fear Civil War Shipwreck Discontiguous District
  • NRHP
Holden Beach
Cape Fear Civil War Shipwreck Discontiguous District
  • NRHP
Topsail Beach
Cape Fear Civil War Shipwreck Discontiguous District
  • NRHP
Wrightsville Beach
Cape Fear Civil War Shipwreck Discontiguous District
  • NRHP
Kure Beach
Cape Fear Civil War Shipwreck Discontiguous District
  • NRHP
Carolina Beach
Stone Arch Bridge, Starrucca Creek
Starrucca
Sock Road Bridge
Lowell
John McMullen House
  • NRHP
San Francisco
Bridge of Lions
  • NRHP
St Augustine
Sam's Creek Bridge
Siletz
Elk City Bridge
Elk City
Brumbaugh Bridge
Walden
Arkwright Bridge
  • NRHP
West Warwick
Arkwright Bridge
  • NRHP
Cranston
Crown and Eagle Mills
North Uxbridge
Division Street Bridge
  • NRHP
Pawtucket
Shelby Street Bridge
  • NRHP
Nashville
Harrisville Historic District
  • NRHP
Burrillville
Hamilton Mill Village Historic District
  • NRHP
North Kingstown
Jervis Gordon Grist Mill Historic District
  • NRHP
Milford
Vale Cut Off Belle Fourche River Bridge
  • NRHP
Belle Fourche
Frankford Arsenal
  • NRHP
Philadelphia
Ely's Stone Bridge
  • NRHP
Monticello
Rogers House
  • NRHP
Daytona Beach
Berger Factory
  • NRHP
Boston
Conroe Bridge
  • NRHP
Junction City
Dewlen-Spohnhauer Bridge
  • NRHP
Independence
Carpenter Bridge
  • NRHP
Rehoboth
Northwestern Knitting Company Factory
  • NRHP
Minneapolis
Adams Mill
  • NRHP
Cutler
McKinney Homestead
  • NRHP
Austin
Grand Central Passenger Station
Chicago
Ormond Garage
Ormond Beach
Spencerville Covered Bridge
  • NRHP
Spencerville
Ranck, Thomas, Round Barn
  • NRHP
Brownsville
Bridge in Portage Township
  • NRHP
Oil City
Bridge in Jenner Township
  • NRHP
Pilltown
Johnstown Inclined Railway
  • NRHP
Johnstown
Hook Windmill
  • NRHP
East Hampton
Bailey Farm Windmill
  • NRHP
North Anson
Bonneville Dam Historic District North Bonneville
Bonneville Dam Historic District Bonneville
New York Central River Raisin Railroad Bridge
  • PRHP
Monroe
Brooklyn Bridge New York City
Washington Bridge
  • NRHP
New York City
Ed Koch Queensboro Bridge
  • NRHP
New York City
State Theatre
  • PRHP
Minneapolis
Fugle's, Mathew, Flour Mill
  • PRHP
Stewartville
USS KIDD Baton Rouge
Winona Bridge Railway Company Swing Bridge
  • PRHP
Winona
Golden Spike National Historic Site Promontory
Solomonville Bridge
Safford
Desert Wash Bridge
Benson
Southern Pacific Railroad Repair Shops, Sparks
  • PRHP
Sparks
Cohoes Company Head Gatehouse, Dam and Headrace
  • PRHP
Waterford
Cohoes Company Head Gatehouse, Dam and Headrace
  • PRHP
Colonie
Cohoes Company Head Gatehouse, Dam and Headrace
  • PRHP
Cohoes
Cresswell, George, Furnace
  • NRHP
Potosi
Horse Creek Bridge
McKenzie Bridge
Ten Pound Island Light
  • NRHP
Gloucester
Burkeville Covered Bridge
  • NRHP
Conway
Witherup Bridge
  • NRHP
Kennerdell
Bridge in Plunkett's Creek Township
Proctor
Wells Street Bridge
  • NRHP
Fort Wayne
Wetumka Cemetery Pavilion and Fence
  • NRHP
Wetumka
Bryan Bridge
  • NRHP
Valentine
Liberty Bridge
  • NRHP
Pittsburgh
County Bridge No 171
  • NRHP
Malvern
Brower's Bridge
  • NRHP
Warwick
Bridge in Lykens Township No 1
  • NRHP
Edman
McClay's Twin Bridge (West)
  • NRHP
Middle Spring
Bridge between Guilford and Hamilton Townships
  • NRHP
Social Island
Bridge in Upper Merion Township
  • NRHP
Gulph Mills
Horse Valley Bridge
  • NRHP
Upper Strasburg
Allenwood River Bridge
  • NRHP
Allenwood
Allenwood River Bridge
  • NRHP
Union
Mauch Chunk and Summit Hill Switchback Railroad
  • NRHP
Jim Thorpe
USS BECUNA (SS-319) Philadelphia
Western Division of the PA Canal
  • NRHP
Robinson
Delaware and Hudson Canal High Falls
Delaware and Hudson Canal Lackawaxen
Delaware and Hudson Canal Honesdale
Delaware and Hudson Canal Minisink
Delaware and Hudson Canal Cuddebackville
Mercer's Mill Covered Bridge
  • NRHP
Christiana
Mercer's Mill Covered Bridge
  • NRHP
Atglen
Booth-Kelly Railroad Bridge
  • PRHP
Springfield
Sanders Bridge
  • NRHP
Sanders
Allentown Bridge
  • NRHP
Houck
Douglas Underpass
  • NRHP
Douglas
Hereford Bridge
  • NRHP
Hereford
Bodwell Water Power Company Plant
  • NRHP
Milford
Canyon Diablo Bridge
  • NRHP
Winona
Canyon Padre Bridge
  • NRHP
Flagstaff
Dead Indian Canyon Bridge
  • NRHP
Desert View
Black River Bridge
  • NRHP
Carrizo
Reppy Avenue Bridge
  • NRHP
Miami
Salt River Canyon Bridge
  • NRHP
Carrizo
Salt River Bridge
  • NRHP
Roosevelt
Fossil Creek Bridge
  • NRHP
Camp Verde
Fossil Creek Bridge
  • NRHP
Strawberry
Park Avenue Bridge
  • NRHP
Clifton
Gila River Bridge
  • NRHP
Clifton
Black Gap Bridge
  • NRHP
Clifton
Fairfield Rice Mill Chimney
  • NRHP
Georgetown, SC
Pine Creek Bridge
  • NRHP
Tortilla Flat
Mormon Flat Bridge
  • NRHP
Tortilla Flat
Hassayampa River Bridge
  • NRHP
Hassayampa
Gila Bend Overpass
  • NRHP
Gila Bend
Weehaw Rice Mill Chimney
  • NRHP
Georgetown, SC
Woodruff Bridge
  • NRHP
Woodruff
Winslow Underpass
  • NRHP
Winslow, AZ
St Joseph Bridge
  • NRHP
Joseph City
Jack's Canyon Bridge
  • NRHP
Winslow, AZ
Holbrook Bridge
  • NRHP
Holbrook
Corduroy Creek Bridge
  • NRHP
Show Low
Cedar Canyon Bridge
  • NRHP
Show Low
Sand Hollow Wash Bridge
  • NRHP
Littlefield
Stone Avenue Underpass
  • NRHP
Tucson
Sixth Avenue Underpass
  • NRHP
Tucson
Fourth Avenue Underpass
  • NRHP
Tucson
Cienega Bridge
  • NRHP
Vail
Sacaton Dam Bridge
  • NRHP
Sacaton
Mineral Creek Bridge
  • NRHP
Kelvin
Santa Cruz Bridge No 1
  • NRHP
Nogales
Lilly Bridge
  • NRHP
Lilly
Medio Creek Bridge
  • NRHP
Normanna
County Bridge No 36
  • NRHP
Portland
Fortieth Street Bridge
  • NRHP
Pittsburgh
Fortieth Street Bridge
  • NRHP
Millvale
Bridge in Jefferson Borough
  • NRHP
Cochrans Mill
Jerome Street Bridge
  • NRHP
McKeesport
Jerome Street Bridge
  • NRHP
Glassport
Bridge in Athens Township
  • NRHP
Athens
Marshall's Bridge
  • NRHP
Little Washington
Bridge in West Fallowfield Township
  • NRHP
Steelville
County Bridge No 148
  • NRHP
Westtown
Webster Donora Bridge
  • NRHP
Donora
Webster Donora Bridge
  • NRHP
Webster
Charleroi-Monessen Bridge
  • NRHP
Monessen
Charleroi-Monessen Bridge
  • NRHP
Charleroi
Thompson-Cape Dam and Ditch Engineering Structure (41HY64)
  • PRHP
San Marcos
Big Rocky Fork Bridge
  • NRHP
Mansfield
Bowsher Ford Bridge
  • NRHP
Rockville
Catlin Bridge
  • NRHP
Rockville
Conley's Ford Bridge
  • NRHP
Bridgeton
Cox Ford Bridge
  • NRHP
Rockville
Crooks Bridge
  • NRHP
Bridgeton
Harry Evans Bridge
  • NRHP
Mecca
Jeffries Ford Bridge
  • NRHP
Bridgeton
Leatherwood Station Bridge
  • NRHP
Montezuma
Mansfield Bridge
  • NRHP
Mansfield
Marshall Bridge
  • NRHP
Rockville
McAllister Bridge
  • NRHP
Bridgeton
Mecca Bridge
  • NRHP
Mecca
Melcher Bridge
  • NRHP
Montezuma
Mill Creek Bridge
  • NRHP
Rockville
Narrows Bridge
  • NRHP
Rockville
Neet Bridge
  • NRHP
Bridgeton
Nevins Bridge
  • NRHP
Bridgeton
Phillips Bridge
  • NRHP
Montezuma
Portland Mills Bridge
  • NRHP
Marshall
Roseville Bridge
  • NRHP
Mecca
Rush Creek Bridge
  • NRHP
Rockville
Sim Smith Bridge
  • NRHP
Montezuma
State Sanitorium Bridge
  • NRHP
Rockville
Thorpe Ford Bridge
  • NRHP
Mecca
Wilkins Mill Bridge
  • NRHP
Rockville
Zacke Cox Bridge
  • NRHP
Mecca
Whitesbog Historic District
  • NRHP
Whiting
Whitesbog Historic District
  • NRHP
Browns Mills
Dean Road Bridge
  • NRHP
South Amherst
Dean Road Bridge
  • NRHP
Birmingham
WAVERTREE
  • NRHP
New York City
WAVERTREE
  • NRHP
South Street Seaport Museum
Wamesit Canal-Whipple Mill Industrial Complex
  • NRHP
Lowell
McDonald's-Kline's Mill
  • NRHP
Bedminster
Antietam Furnace Complex Archeological Site
  • NRHP
Hagerstown
CUMBERLAND
  • NRHP
Isle Royale National Park
EMPEROR
  • NRHP
Isle Royale National Park
GEORGE M COX
  • NRHP
Isle Royale National Park
GLENLYON
  • NRHP
Isle Royale National Park
KAMLOOPS
  • NRHP
Isle Royale National Park
MONARCH
  • NRHP
Isle Royale National Park
Hacienda Buena Union
  • NRHP
San German
North Canal
  • NRHP
Lawrence
Rendezvous Docking Simulator Hampton
Monomoy Point Lighthouse
  • NRHP
Chatham
Traymore Hotel
Atlantic City
Lombard Street Bridge
  • NRHP
Baltimore
Boston Light Boston Harbor
Borden Flats Light Station
  • NRHP
Fall River
Tarpaulin Cove Light
  • NRHP
Elizabeth Islands
Cleveland Ledge Light Station
  • NRHP
Bourne
Three Sisters of Nauset (Twin Lights)
  • NRHP
Eastham
Highland Light Station
  • NRHP
Truro
Gay Head Light
  • NRHP
Aquinnah
Edgartown Harbor Light
  • NRHP
Edgartown
Marblehead Light
  • NRHP
Marblehead
Butler Flats Light Station
  • NRHP
New Bedford
The Beacon Eastham
East Chop Light
  • NRHP
Oak Bluffs
Fall River Waterworks
  • NRHP
Fall River
Derby Wharf Light Station
  • NRHP
Salem
Long Island Head Light
  • NRHP
Boston Harbor
Race Point Light Station
  • NRHP
Cape Cod National Seashore
Race Point Light Station
  • NRHP
Provincetown
Nobska Point Light Station
  • NRHP
Falmouth
Newburyport Harbor Light
  • NRHP
Newburyport
Newburyport Harbor Front Range Light
  • NRHP
Newburyport
Straightsmouth Island Light
  • NRHP
Rockport
Ned Point Light
  • NRHP
Mattapoisett
Minot's Ledge Light
  • NRHP
Scituate
West Chop Light Station
  • NRHP
Tisbury
Wing's Neck Light
  • NRHP
Bourne
Chatham Light Station
  • NRHP
Chatham
Nauset Beach Light
  • NRHP
Eastham
Housatonic River Railroad Bridge
  • NRHP
Milford-Stratford
Day-Vandevander Mill
  • NRHP
Harmon
Archeological Site No 1-18th Century Vessel (28ME196)
  • NRHP
Trenton
Newburyport Harbor Rear Range Light
  • NRHP
Newburyport
Nisland Bridge
Nisland
Strawberry Mine Historic District
  • NRHP
Pony
Steele's Covered Bridge
Dawsonville
Glendale Power House
  • NRHP
Stockbridge
Oakland Historic District
  • NRHP
Burrillville
Ashland Municipal Powerhouse
  • NRHP
Ashland
Hickory Creek Stone Arch Bridge
  • NRHP
Marvin Chapel
Highland Park Tower
  • NRHP
St Paul
Dorris Motor Car Company
  • NRHP
City of St Louis
Rocket Propulsion Test Complex Bay St Louis
Fruitdale Bridge
Fruitdale
Turner Falls Historic District
  • NRHP
Turner Falls
Fairhaven Ditch
  • NRHP
Bering Land Bridge National Preserve
Rear Lighthouse of Hilton Head Range Light Station
  • NRHP
Hilton Head Island
SAINTE GENEVIEVE (dredge)
  • NRHP
Davenport
Fort Washington Fort Washington
Blackledge River Railroad Bridge
  • NRHP
Colchester
Lamb-Fish Bridge
  • NRHP
Charleston
Nashua Manufacturing Company Historic District
  • NRHP
Nashua
Byram Bridge
  • NRHP
Frenchs Store
Byram Bridge
  • NRHP
Bryam
Coopersville Ironworks Site (38CK2) and Susan Furnace Site (38CK67)
  • NRHP
Gaffney
Bird Island Light
  • NRHP
Marion
Hospital Point Light Station
  • NRHP
Beverly
Long Point Light Station
  • NRHP
Provincetown
Cape Poge Light
  • NRHP
Edgartown
Graves Light Station
  • NRHP
Boston Harbor
Gateway Arch Jefferson National Expansion Memorial
Peace Dale Historic District
  • NRHP
South Kingstown
McBride Covered Bridge
  • NRHP
Winterset
Fort Peck Dam
  • NRHP
Fort Peck
Marineland
  • NRHP
Marineland
Fort Nonsense
  • NRHP
Annapolis
Petit Manan Light Station
  • NRHP
Milbridge
Salt River Southern Pacific RR Bridge
  • PRHP
Tempe
Guttenberg Corn Canning Co
  • NRHP
Guttenberg
Springfield Downtown Historic District (Boundary Increase)
  • NRHP
Springfield
Rochester Commercial and Industrial District
  • NRHP
Rochester
Grand Ledge Chair Company Plant
  • NRHP
Grand Ledge
Belton Standpipe
  • NRHP
Belton
McQuilkin, James Greer, Round Barn
  • NRHP
Eagle Center
Nus, August, Polygonal Barn
  • NRHP
Arlington
Haner, William, Polygonal Barn
  • NRHP
Pisgah
Roberts Octagon Barn
  • NRHP
Sharon Center
Dobbin Round Barn
  • NRHP
State Center
Clark Round Barn
  • NRHP
Tyrone
Round Barn, Pilot Grove Township
  • NRHP
Sennett
Kingston Mill Historic District
  • NRHP
Franklin
Kingston Mill Historic District
  • NRHP
South Brunswick
Kingston Mill Historic District
  • NRHP
Princeton
Darrow, George, Round Barn
  • NRHP
Alta Vista
Miller Round Barn
  • NRHP
Sharon Center
Octagon Round Barn, Indian Creek Township
  • NRHP
Iowa Center
Greenwald, I and E, Steam Engine No 1058
  • NRHP
Miami
Humpback Bridge Covington
Hunting Creek Railroad Bridge
  • NRHP
Morganton
Benjamin Banneker: SW 9 Intermediate Boundary Stone Arlington
Coachella Valley Fish Traps
  • NRHP
Valerie
Matthews Fulling Mill Site
  • NRHP
North Brookfield
USS PETERHOFF
  • NRHP
Fort Fisher
Mansfield Cut Underwater Archeological District
  • NRHP
Port Isabel
Mansfield Cut Underwater Archeological District
  • NRHP
Port Isabel
Sankaty Head Light
  • NRHP
Nantucket
Hendricks Head Light Station
  • NRHP
West Southport
Narraguagus Light Station
  • NRHP
Milbridge
Tenants Harbor Light Station
  • NRHP
Tenants Harbor
Walnut Hill Cotton Gin
  • NRHP
Knightdale
Burns Quarry
  • NRHP
Carrollton
James Ward Packard House
  • NRHP
Warren
Camp Lawton
  • NRHP
Millen
King Philip's Hill
  • NRHP
Northfield
Burden Iron Works Site
  • NRHP
Troy
Rapallo Viaduct
  • NRHP
East Hampton
Saugatuck River Bridge
  • NRHP
Westport
Russian Hill-Vallejo Street Crest District
  • NRHP
San Francisco
Round Barn, Norway Township
  • NRHP
Scarville
Wood End Light Lookout Station
  • NRHP
Provincetown
Annisquam Harbor Light Station
  • NRHP
Gloucester
Eastern Point Light Station
  • NRHP
Gloucester
Brant Point Light Station
  • NRHP
Nantucket
Scituate Light
  • NRHP
Scituate
War Eagle Bridge
  • NRHP
War Eagle
Hargrove Pivot Bridge
  • NRHP
Poplar Bluff
Homestead High-Level Bridge
  • NRHP
Pittsburgh
Washington Monument
  • NRHP
Boonsboro
Spavinaw Creek Bridge
Decatur
Osage Mills Dam
  • NRHP
Osage Mills
Illinois River Bridge
  • NRHP
Siloam Springs
Doubling Point Light Station
  • NRHP
Bath
Spring Point Ledge Light Station
  • NRHP
South Portland
Ram Island Light Station
  • NRHP
Boothbay Harbor
Isle Au Haut Light Station
  • NRHP
Isle Au Haut
Goose Rocks Light Station
  • NRHP
North Haven
Bass Harbor Head Light Station
  • NRHP
Acadia National Park
Bass Harbor Head Light Station
  • NRHP
Tremont
Whitlocks Mill Light Station
  • NRHP
Calais
Burnt Coat Harbor Light Station
  • NRHP
Swans Island
KY 2541 Bridge
  • NRHP
Greenup
Heron Neck Light Station
  • NRHP
Vinalhaven
Squirrel Point Light Station
  • NRHP
Phippsburg
Perkins Island Light Station
  • NRHP
Georgetown
Wood Island Light Station
  • NRHP
Biddeford
Kennebec River Light Station
  • NRHP
Bath
Bell Street Bridge
  • NRHP
Glendive
Pumpkin Island Light Station
  • NRHP
Sargentville
Cumberland Covered Bridge
  • NRHP
Matthews
Merchants National Bank and Annex
  • NRHP
Indianapolis
Brownsville Covered Bridge
Brownsville
French Quarter, NOLA
International Boundary Marker
  • NRHP
Logansport
International Boundary Marker
  • NRHP
Deadwood
Germany Bridge
Rochester
Louisville Municipal Bridge, Pylons and Administration Building
  • NRHP
Louisville
Louisville Municipal Bridge, Pylons and Administration Building
  • NRHP
Louisville
Williams Bridge
  • NRHP
Williams
Rawley Point Light Station
  • NRHP
Two Rivers
North Point Lighthouse
  • NRHP
Milwaukee
Bankers Trust Building
Des Moines
Keller's Covered Bridge
  • NRHP
Ephrata
Schlichtig House
  • NRHP
City of St Louis
Angelina River Bridge
  • NRHP
Lufkin
Presque Isle Light Station
  • NRHP
Presque Isle Township
Bridgeton Bridge
  • NRHP
Bridgeton
Cushman No 1 Hydroelectric Power Plant
  • NRHP
Hoodsport
Cushman No 2 Hydroelectric Power Plant
  • NRHP
Hoodsport
Elwha River Hydroelectric Power Plant
  • NRHP
Port Angeles
Glines Canyon Hydroelectric Power Plant
  • NRHP
Port Angeles
Lake Chelan Hydroelectric Power Plant
  • NRHP
Chelan
Little Falls Hydroelectric Power Plant
  • NRHP
Reardon
Little Falls Hydroelectric Power Plant
  • NRHP
Reardan
Nooksack Falls Hydroelectric Power Plant
  • NRHP
Glacier
Long Lake Hydroelectric Power Plant
  • NRHP
Ford
Long Lake Hydroelectric Power Plant
  • NRHP
Ford
Onondaga County War Memorial
  • NRHP
Syracuse
Fort Snelling-Mendota Bridge
  • NRHP
Mendota
Fort Snelling-Mendota Bridge
  • NRHP
Minneapolis
Kettle Falls Hotel Island View
Bernard H Pietenpol Workshop and Garage
  • NRHP
Spring Valley
Winnibigoshish Lake Dam
  • NRHP
Inger
Winnibigoshish Lake Dam
  • NRHP
Bena
Cota Round Barns
  • NRHP
St Cloud
First Baptist Church
  • NRHP
Lake Crystal
Marsh Concrete Rainbow Arch Bridge
  • NRHP
Courtland
Knisley, Dr, Covered Bridge
  • NRHP
Alum Bank
Pioneer Mine Buildings and A Headframe
  • NRHP
Ely
Goodsell Observatory-Carleton College
  • NRHP
Northfield
Norwalk Island Lighthouse
  • NRHP
Norwalk
Terrace Mill Historic District
  • NRHP
Sedan
Daniel Pennie House
  • NRHP
Villard
Church of St Bernard-Catholic
  • NRHP
St Paul
Wesley Methodist Episcopal Church
  • NRHP
Minneapolis
Longyear, E J, First Diamond Drill Site
  • NRHP
Hoyt Lake
Frank's Ford Bridge
  • NRHP
Oronoco
Tunnel Mill
  • NRHP
Spring Valley
Kettle Falls Historic District Island View
Bridge No 4846 (1)
  • NRHP
Kasota
Northern Pacific Railroad Shops Historic District
  • NRHP
Brainerd
Chicago, Milwaukee, St Paul and Pacific Depot, Freight House and Train Shed
  • NRHP
Minneapolis
Bruce Mine Headframe
  • NRHP
Chisholm
Ironton Sintering Plant Complex
  • NRHP
Crosby
Kern Bridge
  • NRHP
Skyline
Hanover Bridge
  • NRHP
Hanover
Hanover Bridge
  • NRHP
Rogers
Tiger Stadium
  • NRHP
Detroit
Keniston Bridge
  • NRHP
Andover
Seha Sorghum Mill
  • NRHP
Janesville
Fair Haven Flour Mill
  • NRHP
Fairhaven
Cilleyville Bridge
  • NRHP
Andover
Cartwright Creek Bridge
  • NRHP
Springfield
Beech Fork Bridge, Mackville Road
  • NRHP
Springfield
Doe Run Trestle
  • NRHP
Springfield
Geodetic Center of the United States
  • NRHP
Osborne
Butte, Anaconda and Pacific Railway Historic District
  • NRHP
Butte
Butte, Anaconda and Pacific Railway Historic District
  • NRHP
Anaconda
Weddle Bridge
Crabtree
Pisgah Rural Historic District
  • NRHP
Lexington
Pisgah Rural Historic District
  • NRHP
Versailles
Fauba Archaelogical Site
  • NRHP
Tol Island
Heiau in Kukuipahu
  • NRHP
Hawi
He'eia Fishpond He'eia State Park
Portsmouth Earthworks, Group A
  • NRHP
South Portsmouth
Rota Latte Stone Quarry
  • NRHP
Songsong
Between the Rivers Historic District
  • NRHP
Rome
Between the Rivers Historic District (Boundary Decrease)
Rome
North Union Shaker Site
  • NRHP
Cleveland
Mississippi River Bridge
  • NRHP
Vicksburg
Mississippi River Bridge
  • NRHP
Delta
Brown's Race Historic District
  • NRHP
City of Rochester
Pratt City Carline Historic District
  • NRHP
Birmingham
Longwood Covered Bridge
Connersville
Fort Pemberton Site
  • NRHP
Charleston
Sycamore Mills Site
  • NRHP
Ashland City
Wilson Utility Pottery Kilns Archeological District
  • NRHP
Seguin
Kirbee Kiln Site
  • NRHP
Montgomery
Mission Creek Dam and Acequia Site
  • NRHP
Victoria
Andreas Canyon
  • NRHP
Palm Springs
Tahquitz Canyon
  • NRHP
Palm Springs
The Lydia
  • NRHP
San Francisco
Fort Bramlette
  • NRHP
Nicholasville
Kelly's Suwanee Furnace Office
  • NRHP
Kuttawa
McCulloch's Gold Mill
  • NRHP
Jamestown
Hornsby Bridge
  • NRHP
Eminence
Ked Ra Ngchemiangel
  • NRHP
Ameliik
The Stockade
  • NRHP
Florence
Delaware Breakwater and Lewes Harbor
  • NRHP
Lewes
Isles of Shoals
  • NRHP
Rye
Kahaluu Historic District
  • NRHP
Holualoa
Poesten Kill Gorge Historic District
  • NRHP
Troy
Ashley Hall Plantation
  • NRHP
Charleston
Waverly Bridge
  • NRHP
Waverly
Waverly Bridge
  • NRHP
Columbus
Midgley, W W, Bridge
  • NRHP
Sedona
Winslow Bridge
  • NRHP
Winslow, AZ
Miami Avenue Bridge
  • NRHP
Miami
Keystone Avenue Bridge
  • NRHP
Miami
Inspiration Avenue Bridge
  • NRHP
Miami
Perkinsville Bridge
  • NRHP
Ash Fork
Walnut Creek Bridge
  • NRHP
Simmons
Boulder Creek Bridge
  • NRHP
Tortilla Flat
Holbrook Bridge on Az 77
  • NRHP
Holbrook
Fourteen Foot Bank Light
  • NRHP
Bowers
Marcus Hook Range Rear Light
  • NRHP
Wilmington
Reedy Island Range Rear Light
  • NRHP
Taylors Bridge
Marsh Rainbow Arch Bridge
  • NRHP
Lake City
Valley Forge (40DS28)
  • NRHP
Charlotte
Patterson Forge (40CH87)
  • NRHP
Kingston Springs
Brownsport II Furnace (40DR86) (Boundary Increase)
  • NRHP
Decaturville
Peninsula Village Historic District
  • NRHP
Cuyahoga Valley National Park
Verde River Bridge
  • NRHP
Paulden
Lynx Creek Bridge
  • NRHP
Prescott
Little Hell Canyon Bridge
  • NRHP
Drake
Walnut Grove Bridge
  • NRHP
Walnut Grove
Kelvin Bridge
  • NRHP
Kelvin
Devil's Canyon Bridge
  • NRHP
Superior, AZ
Queen Creek Bridge
  • NRHP
Superior, AZ
Queen Creek Bridge
  • NRHP
Florence Junction
San Tan Canal Bridge
  • NRHP
Sacaton
Winkelman Bridge
  • NRHP
Winkelman
Old Trails Bridge
  • NRHP
Topock
Lewis and Pranty Creek Bridge
  • NRHP
Tortilla Flat
Walnut Canyon Bridge
  • NRHP
Winona
Pumphouse Wash Bridge
  • NRHP
Flagstaff
Querino Canyon Bridge
  • NRHP
Houck
John I Howe House
  • NRHP
Derby
Miller Ree Creek Bridge
  • NRHP
Miller
Stairs Station Hydroelectric Power Plant Historic District
  • NRHP
Salt Lake City
Granite Hydroelectric Power Plant Historic District
  • NRHP
Salt Lake City
Devil's Gate-Weber Hydroelectric Power Plant Historic District
  • NRHP
Uintah
Devil's Gate-Weber Hydroelectric Power Plant Historic District
  • NRHP
Ogden
Cutler Hydroelectric Power Plant Historic District
  • NRHP
Beaver Dam
Union Civil War Fortification
  • NRHP
Napier
Cedar Grove Furnace
  • NRHP
Linden
Cedar Grove Furnace (40PY77)(Boundary Increase)
  • NRHP
Pope
Old Wells Road Bridge
  • PRHP
Eau Claire
Yakima Valley Transportation Company
  • NRHP
Yakima
Fremont Powerhouse
  • NRHP
Granite
Owens Creek Bridge
  • NRHP
Utica
Highway 11 Bridge over Chunky River
  • NRHP
Enterprise
Enterprise Bridge
  • NRHP
Enterprise
Eddiceton Bridge
  • NRHP
Eddiceton
Motley Slough Bridge
  • NRHP
Columbus
Widow's Creek Bridge
  • NRHP
Port Gibson
Tibbee Bridge
  • NRHP
West Point
Rockport Bridge
Georgetown
Rockport Bridge
Pinola
Stuckey's Bridge
  • NRHP
Meridian
Tiffany Stone Bridge
  • PRHP
Tiffany
Bahala Creek Bridge
  • NRHP
Oma
Big Black River Railroad Bridge
  • NRHP
Bovina
Big Black River Railroad Bridge
  • NRHP
Edwards
Fairground Street Bridge
  • NRHP
Vicksburg
Confederate Avenue Brick Arch Bridge
  • NRHP
Vicksburg
Leaf River Bridge
  • NRHP
McClain
Gatesville Bridge
  • NRHP
Gatesville
Gatesville Bridge
  • NRHP
Pearl
Shubuta Bridge
  • NRHP
Shubuta
Homochitto River Bridge
  • NRHP
Hazlehurst
Yellow Creek Bridge
  • NRHP
Waynesboro
Millanville-Skinners Falls Bridge
  • NRHP
Millanville
Millanville-Skinners Falls Bridge
  • NRHP
Skinners Falls
Pond Eddy Bridge
  • NRHP
Pond Eddy
Pond Eddy Bridge
  • NRHP
Pond Eddy
Yeakle's Mill Bridge
  • NRHP
Yeakle Mill
CHESTER A CONGDON
  • NRHP
Isle Royale National Park
Duluth and Iron Range Railway Ore Dock No 6
  • PRHP
Two Harbors
John's Burnt Mill Bridge
  • NRHP
New Oxford
Westinghouse, George, Memorial Bridge
  • NRHP
East Pittsburgh
McDaniels Covered Bridge
Bedford
Snooks Covered Bridge
  • NRHP
Alum Bank
Feltons Mill Covered Bridge
  • NRHP
Bedford
Jacksons Mill Covered Bridge
  • NRHP
Bedford
Ryot Covered Bridge
  • NRHP
Fishertown
Hewitt Covered Bridge
  • NRHP
Hewitt
Halls Mill Covered Bridge
  • NRHP
Hopewell
Heirline Covered Bridge
  • NRHP
Manns Choice
Diehls Covered Bridge
  • NRHP
New Buena Vista
Osterburg Covered Bridge
  • NRHP
Osterburg
New Paris Covered Bridge
  • NRHP
New Paris
Fischtner Covered Bridge
  • NRHP
Stringtown
Dreibelbis Station Bridge
  • NRHP
Kutztown
Kutz's Mill Bridge
  • NRHP
Kutztown
Greisemer's Mill Bridge
  • NRHP
Oley Township
Pleasantville Bridge
  • NRHP
Oley Township
Wertz's Covered Bridge
  • NRHP
Reading
Cope's Bridge
  • NRHP
Marshallton
Knecht's Mill Covered Bridge
  • NRHP
Springtown
Erwinna Covered Bridge
  • NRHP
Erwinna
Bridge Valley Bridge
  • NRHP
Hartsville
Pine Valley Covered Bridge
  • NRHP
New Britain
Mood's Covered Bridge
Perkasie
South Perkasie Covered Bridge
  • NRHP
Perkasie
Loux Covered Bridge
  • NRHP
Pipersville
Cabin Run Covered Bridge
  • NRHP
Point Pleasant
Frankenfield Covered Bridge
  • NRHP
Point Pleasant
Sheard's Mill Covered Bridge
  • NRHP
Richardtown
Haupt's Mill Covered Bridge
Springtown
Little Gap Covered Bridge
  • NRHP
Little Gap
Hall's Bridge
  • NRHP
Chester Springs
County Bridge No 124
  • NRHP
Downingtown
Gibson's Covered Bridge
  • NRHP
Downingtown
Larkin Covered Bridge
  • NRHP
Downingtown
Kennedy Bridge
  • NRHP
Kimberton
Bartram's Covered Bridge
  • NRHP
Newtown Square
Bartram's Covered Bridge
  • NRHP
Media
Glen Hope Covered Bridge
  • NRHP
West Grove
Rudolph and Arthur Covered Bridge
  • NRHP
West Grove
Speakman No 1
  • NRHP
Modena
Speakman No 2, Mary Ann Pyle Bridge
  • NRHP
Modena
Rapps Bridge
  • NRHP
Mont Clare
Linton Stevens Covered Bridge
  • NRHP
New London
Hare's Hill Road Bridge
  • NRHP
Phoenixville
Logan Mills Covered Bridge
  • NRHP
Loganton
Pool Forge Covered Bridge
  • NRHP
Churchtown
Weaver's Mill Covered Bridge
  • NRHP
Churchtown
Forry's Mill Covered Bridge
  • NRHP
Columbia
Seigrist's Mill Covered Bridge
  • NRHP
Columbia
Butcher's Mill Covered Bridge
  • NRHP
Denver
Bitzer's Mill Covered Bridge
  • NRHP
Ephrata
Leaman Place Covered Bridge
  • NRHP
Intercourse
White Rock Forge Covered Bridge
  • NRHP
Kirkwood
Landis Mill Covered Bridge
  • NRHP
Lancaster
Pinetown Covered Bridge
  • NRHP
Lancaster
Buck Hill Farm Covered Bridge
  • NRHP
Lititz
Shearer's Covered Bridge
  • NRHP
Manheim
Kaufman's Distillery Covered Bridge
  • NRHP
Manheim
Colemanville Covered Bridge
  • NRHP
Pequea
Lime Valley Covered Bridge
  • NRHP
Refton
Erb's Covered Bridge
  • NRHP
Rothsville
Herr's Mill Covered Bridge
  • NRHP
Soundersbury
Neff's Mill Covered Bridge
  • NRHP
Strasburg
Red Run Covered Bridge
  • NRHP
Terre Hill
Baumgardner's Mill Covered Bridge
  • NRHP
Willow Street
Pine Grove Covered Bridge
  • NRHP
Kirkwood
Pine Grove Covered Bridge
  • NRHP
Oxford
Shenk's Mill Covered Bridge
  • NRHP
Manheim
Risser's Mill Covered Bridge
Manheim
Jackson's Mill Covered Bridge
Kirkwood
Harrington Covered Bridge
  • NRHP
Albion
Gudgeonville Covered Bridge
  • NRHP
Girard
Waterford Covered Bridge
  • NRHP
Waterford
Zook's Mill Covered Bridge
  • NRHP
Brownstown
Banks Covered Bridge
  • NRHP
New Wilmington
McConnell's Mill Covered Bridge
  • NRHP
Princeton
Bogert Covered Bridge
  • NRHP
Allentown
Schlicher Covered Bridge
  • NRHP
Allentown
Geiger Covered Bridge
  • NRHP
Orefield
Manasses Guth Covered Bridge
  • NRHP
Orefield
Rex Covered Bridge
  • NRHP
Orefield
Wehr Covered Bridge
  • NRHP
Orefield
Bittenbender Covered Bridge
  • NRHP
Huntington Mills
Kinzua Viaduct
Mount Jewett
Horsham-Montgomery Bridge
  • NRHP
Fort Washington
Old Waterworks Bethlehem
Lehigh Canal: Eastern Section Glendon and Abbott Street Industrial Sites
  • NRHP
Easton
Kreiderville Covered Bridge
  • NRHP
Kreiderville
Gross Bridge
  • NRHP
Beavertown
Beechdale Bridge
  • NRHP
Berlin
Packsaddle Bridge
  • NRHP
Glen Savage
New Baltimore Bridge
  • NRHP
New Baltimore
Glessner Bridge
  • NRHP
Shanksville
Barronvale Bridge
  • NRHP
Somerset
King's Bridge
  • NRHP
Somerset
Walter's Mill Bridge
  • NRHP
Somerset
Trostletown Bridge
  • NRHP
Stoystown
Shaffer's Bridge
  • NRHP
Tire Hill
Lower Humbert Bridge
  • NRHP
Ursina
William E Boeing House
  • NRHP
Shoreline
West Trenton Station
  • NRHP
West Trenton
Battery Osgood-Farley
  • NRHP
Los Angeles
Van Sant Covered Bridge
  • NRHP
New Hope
Grand River Ditch Grand Lake
Trail Ridge Road Estes Park
Trail Ridge Road Grand Lake
Poinsett Bridge
  • NRHP
Tigerville
Antelope Creek Covered Bridge
Eagle Point
St Paul, Minneapolis, and Manitoba Railway Company Shops Historic District
  • NRHP
St Paul
Pajarito Springs Site
  • NRHP
White Rock
Winter Harbor Light Station
  • NRHP
Winter Harbor
Drake Hill Road Bridge
  • NRHP
Simsbury
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Cheshire
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Hamden
Farmington Canal - New Haven and Northampton Canal
  • NRHP
New Haven
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Avon
Farmington Canal - New Haven and Northampton Canal
  • NRHP
East Granby
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Farmington
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Granby
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Plainville
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Simsbury
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Southington
Farmington Canal - New Haven and Northampton Canal
  • NRHP
Suffield
Lyman Viaduct
  • NRHP
Colchester
Pequonnock River Railroad Bridge
  • NRHP
Bridgeport
Mianus River Railroad Bridge
  • NRHP
Greenwich
Riverside Avenue Bridge
  • NRHP
Greenwich
Norwalk River Railroad Bridge
  • NRHP
South Norwalk
Saugatuck River Railroad Bridge
  • NRHP
Westport
Thames Shipyard
  • NRHP
New London
New Century Mill (Boundary Decrease)
Minneapolis
Brandywine Village Historic District
  • NRHP
Wilmington
Brandywine Village Historic District (Boundary Increase)
  • NRHP
Wilmington
Abbott's Mill (Boundary Increase)
  • NRHP
Milford
Osage Creek Bridge
  • NRHP
Tontitown
Wauregan Historic District
  • NRHP
Plainfield
Bedell Covered Bridge
  • NRHP
Haverhill
Bedell Covered Bridge
  • NRHP
Newbury
Gen George Stark House
  • NRHP
Nashua
Goffstown Covered Railroad Bridge
  • NRHP
Goffstown
Whittier Bridge
  • NRHP
Ossipee
Ashuelot Covered Bridge
  • NRHP
Ashuelot
Phillips-Sprague Mine
  • NRHP
Beckley
Tillinghast Mill Site
  • NRHP
East Greenwich
Boon Island Light Station
  • NRHP
York
Little River Light Station
  • NRHP
Cutler
Mount Desert Light Station
  • NRHP
Frenchboro
Prospect Harbor Light Station
  • NRHP
Prospect Harbor
Halfway Rock Light Station
  • NRHP
South Harpswell
Lubec Channel Light Station
  • NRHP
Lubec
Great Duck Island Light Station
  • NRHP
Frenchboro
Matinicus Rock Light Station
  • NRHP
Matinicus Island
Ram Island Ledge Light Station
  • NRHP
Cape Elizabeth
Saddleback Ledge Light Station
  • NRHP
Vinalhaven
Bear Island Light Station
  • NRHP
Acadia National Park
Marshall Point Light Station
  • NRHP
Port Clyde
Whaleback Light Station
  • NRHP
Kittery
Goat Island Light Station
  • NRHP
Cape Porpoise
Fort Point Light Station
  • NRHP
Stockton Springs
Sakonnet Light Station
  • NRHP
Little Compton
Whitehead Light Station
  • NRHP
Tenants Harbor
Northern Pacific Underpass
  • PRHP
Billings
Indian Island Light Station
  • NRHP
Rockport
Smith Avenue High Bridge
St Paul
Lee and Gould Furnace (40HI125)
  • NRHP
Bucksnort
Mount Vernon Memorial Highway
  • NRHP
Washington, DC
Mount Vernon Memorial Highway
  • NRHP
Arlington
Mount Vernon Memorial Highway
  • NRHP
McLean
Mount Vernon Memorial Highway
  • NRHP
Alexandria
Baker Island Light Station
  • NRHP
Acadia National Park
Rapidan Dam Canal of the Rappahannock Navigation
  • NRHP
Fredericksburg
Quincy Granite Railway
  • NRHP
Quincy
Twin Lights Historic District-Cape Ann Light Station
  • NRHP
Rockport
Roughan Hall
  • NRHP
Boston
Donald McKay House
  • NRHP
Boston
Buckner's Creek Bridge
Flatonia
Chow Chow Bridge
Taholah
Marked Tree Lock and Siphons
  • NRHP
Marked Tree
Antelope Creek Bridge
Medford
Walnut Lane Bridge
Philadelphia
Bridge between East Manchester and Newberry Townships
Conewago Heights
Fordyce House
  • NRHP
Little Rock
San Diego Civic Center
  • NRHP
San Diego
Neosho River Bridge
  • NRHP
Hartford
Philippi Covered Bridge
  • NRHP
Philippi
Camp Washington-Carver Complex
  • NRHP
Clifftop
Herns Mill Covered Bridge
  • NRHP
Lewisburg
Simpson Creek Covered Bridge
  • NRHP
Bridgeport
Walkersville Covered Bridge
  • NRHP
Walkersville
Castle Pinckney
  • NRHP
Charleston
Dents Run Covered Bridge
  • NRHP
Laurel Point
Ned Ashton House
Iowa City
Mollohan Mill
  • NRHP
Replete
Power Plant and Dam No 4
  • NRHP
Scrabble
Fletcher Covered Bridge
  • NRHP
Maken
Wilson Lake Reservoir Spillway and Canal Walls
  • PRHP
Eden
Rensselaer and Saratoga Railroad: Green Island Shops
  • NRHP
Green Island
Dunkirk Light
  • NRHP
Dunkirk
Bates Round Barn
  • NRHP
Greene
Buffalo Main LIght
  • NRHP
Buffalo
Tibbetts Point Light
  • NRHP
Cape Vincent
Manhattan Bridge
  • NRHP
New York City
Grand Central Terminal New York City
Champlain Canal
  • NRHP
Fort Miller
Champlain Canal
  • NRHP
Troy
Champlain Canal
  • NRHP
Whitehall
Glens Falls Feeder Canal
  • NRHP
Hudson Falls
Glens Falls Feeder Canal
  • NRHP
Glens Falls
Old Croton Aqueduct Yonkers
Salisbury Turnpike Bridge
  • NRHP
Rhinebeck
Double-Span Metal Pratt Truss Bridge
  • NRHP
Keeseville
Double-Span Metal Pratt Truss Bridge
  • NRHP
Keeseville
Buskirk Covered Bridge
  • NRHP
Buskirk
Buskirk Covered Bridge
  • NRHP
Buskirk
Eagleville Covered Bridge
  • NRHP
Eagleville
Rexleigh Covered Bridge
  • NRHP
Jackson
Shushan Covered Bridge
  • NRHP
Shushan
Thirty Mile Point Light
  • NRHP
Somerset
Spengler Bridge
  • NRHP
Chatham
Needham Street Bridge
  • NRHP
Newton
Needham Street Bridge
  • NRHP
Needham
Lower Shawsheen Railroad Bridge
  • PRHP
Andover
Upper Shawsheen Railroad Bridge
  • PRHP
Andover
Denver and Rio Grande Western Railroad Business Car No 101
  • NRHP
Othello
Old Alton Bridge
  • NRHP
Copper Canyon
Clinton Hall
  • NRHP
Ithaca
Milwaukee Road Historic District
  • NRHP
Harlowton
Pond Mill Bridge
  • NRHP
Bermudian
Grand Island Harbor Rear Range Light
  • NRHP
Christmas
Calf Pasture Pumping Station Complex
  • NRHP
Boston
Jack Knife Bridge
Everett
Doty Bridge
Doty
McClure Bridge
Palouse
Pasco-Kennewick Bridge
Pasco
Prosser Steel Bridge
Prosser
Weyerhaeuser Pe Ell Bridge
Pe Ell
Wishkah River Bridge
Greenwood
Bridge No L1409
  • NRHP
Winona
Pioneer Steel Elevator
  • PRHP
Minneapolis
Mechanicville Hydroelectric Plant
  • NRHP
Mechanicville
Mechanicville Hydroelectric Plant
  • NRHP
Mechanicville
Lynde Point Lighthouse
  • NRHP
Old Saybrook
Greens Ledge Lighthouse
  • NRHP
Rowayton
Peck Ledge Lighthouse
  • NRHP
Norwalk
Faulkners Island Lighthouse
  • NRHP
Guilford
Tongue Point Lighthouse
  • NRHP
Bridgeport
Stratford Shoal Lighthouse
  • NRHP
New Haven
Stratford Point Lighthouse
  • NRHP
Stratford
Southwest Ledge Lighthouse
  • NRHP
New Haven
Saybrook Breakwater Lighthouse
  • NRHP
Old Saybrook
New London Harbor Lighthouse
  • NRHP
New London
New London Ledge Lighthouse
  • NRHP
New London
Corbin Bridge
  • NRHP
Huntingdon
Bridge No L4770
  • NRHP
Fountain
Dix River Dam
  • PRHP
Harrodsburg
Dix River Dam
  • PRHP
Bryantsville
Colorado River Bridge at Bastrop
  • NRHP
Bastrop
Saline River Bridge
Benton
Lake No 1 Bridge
  • NRHP
North Little Rock
Edgemere Street Bridge
  • NRHP
North Little Rock
Harp Creek Bridge
  • NRHP
Jasper
Upper Beaver Hydroelectric Power Plant Historic District
  • NRHP
Beaver
Pioneer Hydroelectric Power Plant Historic District
  • NRHP
Ogden
Santa Clara Hydroelectric Power Plants Historic District
  • NRHP
Gunlock
Santa Clara Hydroelectric Power Plants Historic District
  • NRHP
Veyo
Snake Creek Hydroelectric Power Plant Historic District
  • NRHP
Heber City
Upper American Fork Hydroelectric Power Plant Historic District
  • NRHP
Highland
Fountain Green Hydroelectric Plant Historic District
  • NRHP
Fountain Green
Mount Royal Station Baltimore
Manchester Street Bridge
  • NRHP
Baraboo
Inapsan Spanish Oven
  • PRHP
Andersen Air Force Base
Long Lick Creek Bridge
  • NRHP
Willisburg
McKees Rocks Bridge
  • NRHP
Pittsburgh
McKees Rocks Bridge
  • NRHP
McKee Rocks
Joso Viaduct
  • PRHP
Starbuck
Joso Viaduct
  • PRHP
Starbuck
Patterson Forge (40CH87) (Boundary Increase)
  • NRHP
Lillamay
Woodrow Wilson Bridge
  • NRHP
Jackson
Running Water Creek Bridge
  • NRHP
Shuqualak
Keesler Bridge
  • NRHP
Greenwood
Waynesboro Bridge
Waynesboro
Columbus Bridge
  • NRHP
Columbus
Woodburn Bridge
  • NRHP
Indianola
Windpoint Light Station
  • NRHP
Racine
Fort Sumter National Monument Charleston
Dry Tortugas National Park Dry Tortugas Islands
Fort Matanzas National Monument St Augustine
Fort Pulaski National Monument Savannah
MUSKEGON Shipwreck Site
  • NRHP
Michigan City
Ronstadt-Sims Adobe Warehouse
  • NRHP
Tucson
Irish Bend Bridge
Monroe
Lehigh Valley Railroad Barge No 79
  • NRHP
Brooklyn
Lloyd Harbor Lighthouse
  • NRHP
Huntington
Chicago, St Paul, Minneapolis, and Omaha Turntable
  • NRHP
Currie
USS ALBACORE Portsmouth, NH
Hobart Circle Historic District
  • NRHP
Troy
William Hobart Vacation House
  • NRHP
Troy
E A Hobart House
  • NRHP
Troy
House at 203 Penn Road
  • NRHP
Troy
House at 129 South Ridge
  • NRHP
Troy
House at 1022 West Main Street
  • NRHP
Troy
House at 121 South Ridge
  • NRHP
Troy
House at 145 South Ridge
  • NRHP
Troy
Ford Motor Company Cincinnati Plant
  • NRHP
Cincinnati
Pearl Harbor Hawaii
FALLS OF CLYDE Honolulu
LUNA (tugboat) Boston
Quincy Mine No 2 Shaft Hoist House
  • NRHP
Hancock
Quincy Mining Company Historic District Hancock
Calumet Historic District Calumet
Hortense Bridge
Nathrop
Delta Bridge
Delta
Hawthorn Hill Oakwood
Hancock-Greenfield Bridge
  • NRHP
Hancock
Broadway Bridge
  • NRHP
Clarkdale
Delaware Division of the Pennsylvania Canal Bristol
Delaware Division of the Pennsylvania Canal Easton
Petrified Forest Bridge
Petrified Forest National Park
Hickahala Creek Bridge
Senatobia
Twining Ford Covered Bridge
Newtown Township
Carman Covered Bridge
West Springfield
Mission Parkway San Antonio
Ohio Hospital For Epileptics Stone Water Towers
  • NRHP
Gallipolis
Erie Canal Fort Hunter
Bridge over Arkansas River
  • NRHP
Buena Vista
Detroit Avenue Bridge
  • NRHP
Lakewood
Detroit Avenue Bridge
  • NRHP
Rocky River
Red Cliff Bridge
  • NRHP
Red Cliff
Rifle Bridge
  • NRHP
Rifle
Fruita Bridge
  • NRHP
Fruita
US Army Museum Hawaii Honolulu
US Army Museum Hawaii Fort DeRussy Beach Park
Ingalls Building
  • NRHP
Cincinnati
Hill, Jediah, Covered Bridge
  • NRHP
Cincinnati
Buckeye Furnace Covered Bridge
  • NRHP
Wellston
B and O Railroad Viaduct
  • NRHP
Bellaire
Horseshoe Curve Altoona
Mill Road Bowstring Bridge
  • NRHP
Bladensburg
Goldstream Dredge No 8
  • NRHP
Fairbanks
First Concrete Street In US
  • NRHP
Bellefontaine
Fairport Marine Museum
  • NRHP
Fairport Harbor
Reading Terminal and Trainshed Philadelphia
Smithfield Street Bridge Pittsburgh
McColly Covered Bridge
  • NRHP
Bloom Center
Lorain Lighthouse
  • NRHP
Lorain
Maumee Sidecut
  • NRHP
Maumee
S Bridge, National Road Old Washington
Youngstown Sheet and Tube Company Housing
  • NRHP
Campbell
Charles F Kettering House Kettering
White's-Vale Mill
  • NRHP
Athens
Harshaville Covered Bridge
  • NRHP
Harshaville
Ford River Rouge Complex Dearborn
Highland Park Plant, Ford Motor Company Highland Park
Cleveland Warehouse District
  • NRHP
Cleveland
Adams Power Plant Transformer House Niagara Falls
Harpersfield Covered Bridge
  • NRHP
Harpersfield
Kirker Covered Bridge
  • NRHP
West Union
Rossville Historic District
  • NRHP
Hamilton
Blackwood Covered Bridge
  • NRHP
Athens
Wiswell Road Covered Bridge
  • NRHP
Windsor Mills
Pugh's Mill Covered Bridge
  • NRHP
Oxford
Palos Covered Bridge
  • NRHP
Glouster
Martinsville Road Covered Bridge
  • NRHP
Martinsville
Helmick Covered Bridge
  • NRHP
Blissfield
Cleveland And Pittsburgh Railroad Bridge
  • NRHP
Bedford
Bay View Hospital
  • NRHP
Bay Village
Chambers Road Covered Bridge
  • NRHP
Olive Green
Detroit-Superior High Level Bridge
  • NRHP
Cleveland
Division Avenue Pumping Station
  • NRHP
Cleveland
Hessler Court Wooden Pavement
  • NRHP
Cleveland
Harlan House
  • NRHP
Embreeville
Kidwell Covered Bridge
  • NRHP
Truetown
Hizey Covered Bridge
  • NRHP
Pickerington
Rockefeller Park Bridges
  • NRHP
Cleveland
John Bright No 1 Iron Bridge
  • NRHP
Carroll
Lorain-Carnegie Bridge
  • NRHP
Cleveland
Bright, John, Covered Bridge
  • NRHP
Baltimore
Superior Avenue Viaduct
  • NRHP
Cleveland
Goose Creek Foot Bridge
  • NRHP
Greensburg
Western Reserve Building
  • NRHP
Cleveland
Stonelick Covered Bridge
  • NRHP
Perintown
Greenbank Historic Area - Philips
  • NRHP
Marshallton
Greenbank Historic Area
  • NRHP
Marshallton
Stone Arch Bridge
  • NRHP
Kenoza Lake
Clarksburg Downtown Historic District (Boundary Decrease)
Clarksburg
High Bridge
  • NRHP
Coatesville
Harrisburg Central Railroad Station and Trainshed Harrisburg
Walnut Street Bridge
  • NRHP
Harrisburg
Rockville Bridge
  • NRHP
Rockville
Rockville Bridge
  • NRHP
Marysville
Hays Bridge Historic District
  • NRHP
Mercersburg
Burnt Cabins Gristmill Property
  • NRHP
Burnt Cabins
Forsythe Covered Bridge
  • NRHP
Rushville
Moscow Covered Bridge
  • NRHP
Rushville
Norris Ford Covered Bridge
  • NRHP
Rushville
Offutt Covered Bridge
  • NRHP
Rushville
Alamo National Bank Building
  • NRHP
San Antonio
Crum Road Bridge
  • NRHP
Walkersville
Seattle Electric Company Georgetown Steam Plant Seattle
English Center Suspension Bridge
  • NRHP
English Center
Fort Livingston
  • NRHP
Grand Isle
Evansburg Historic District
  • NRHP
Evansburg
Keefer Covered Bridge No 7
  • NRHP
Washingtonville
Davidson, Tyler, Fountain
  • NRHP
Cincinnati
Fort Proctor
  • NRHP
Shell Beach
Cartersville Bridge
  • NRHP
Cartersville
Bailey's Dam Site
  • NRHP
Alexandria
1872 California-Nevada State Boundary Marker
  • NRHP
Verdi
1872 California-Nevada State Boundary Marker
  • NRHP
Verdi
Lock No 32
  • NRHP
Cuyahoga Valley National Park
Lock No 31
  • NRHP
Cuyahoga Valley National Park
Lock No 30 and Feeder Dam
  • NRHP
Cuyahoga Valley National Park
Lock No 29 and Aqueduct
  • NRHP
Cuyahoga Valley National Park
Lock No 28
  • NRHP
Cuyahoga Valley National Park
Lock No 27
  • NRHP
Cuyahoga Valley National Park
Lock No 26
  • NRHP
Cuyahoga Valley National Park
Lock No 33
  • NRHP
Cuyahoga Valley National Park
Lock No 34
  • NRHP
Cuyahoga Valley National Park
Lock No 35
  • NRHP
Cuyahoga Valley National Park
Lock No 37 and Spillway
  • NRHP
Cuyahoga Valley National Park
Lock No 38 and Spillway
  • NRHP
Cuyahoga Valley National Park
Lock No 39 and Spillway
  • NRHP
Cuyahoga Valley National Park
Marconi Wireless Station Site
  • NRHP
Cape Cod National Seashore
Moro Rock Stairway
  • NRHP
Sequoia National Park
Ohio and Erie Canal Deep Lock
  • NRHP
Cuyahoga Valley National Park
Pumping Station No 2 San Francisco Fire Department Auxiliary Water Supply System San Francisco
Redwood Highway
  • NRHP
Klamath Coastal
Arlington Memorial Bridge
  • NRHP
Washington, DC
Arlington Memorial Bridge
  • NRHP
Arlington
Boston Naval Shipyard Boston
MacKay School of Mines Building
  • NRHP
Reno
Virginia Street Bridge
  • NRHP
Reno
Potosi
  • NRHP
Las Vegas
Fire Island Light Station
  • NRHP
Fire Island National Seashore
Fort Barrancas Historical District Pensacola
Lakeview House
  • NRHP
Carson City
Minden Flour Milling Company
  • NRHP
Minden
Eagle Nest Dam
  • NRHP
Eagle Nest
Catskill Charcoal Ovens
  • NRHP
Raton
Apache Canyon Railroad Bridge
  • NRHP
Lamy
Unitary Plan Wind Tunnel Moffett Field
Zero Gravity Research Facility (B-2) Cleveland
Rocket Engine Test Facility Cleveland
Spacecraft Propulsion Research Facility Sandusky
Propulsion and Structural Test Facility Huntsville
Saturn V Dynamic Test Stand Huntsville
Neutral Buoyancy Space Simulator Huntsville
Space Environment Simulation Laboratory Johnson Space Center
Spacecraft Magnetic Test Facility Greenbelt
Pioneer Deep Space Station Fort Irwin
Space Flight Operations Facility Pasadena
Apollo Mission Control Center Johnson Space Center
Acequia System of El Rancho de las Golondrinas
  • NRHP
Santa Fe
Hadley Parabolic Bridge
  • NRHP
Hadley
Arcade and Attica Railroad
  • NRHP
North Java
Copper Peak
  • NRHP
Ironwood
Fort Sumner Railroad Bridge
  • NRHP
Fort Sumner
First National Bank of Eddy
  • NRHP
Carlsbad
El Paso And Southwestern Railway Water Supply System
  • NRHP
Nogal
Otowi Historic District
  • NRHP
Santa Fe
Fort Hancock and the Sandy Hook Proving Ground Historic District Sandy Hook
Tres Piedras Railroad Water Tower
  • NRHP
Tres Piedras
Fort Massachusetts
  • NRHP
Ship Island (Mississippi)
Moriarty Eclipse Windmill
  • NRHP
Moriarty
Percha Diversion Dam
  • NRHP
Arrey
Furnace Run Aqueduct
  • NRHP
Cuyahoga Valley National Park
Elephant Butte Dam
  • NRHP
Elephant Butte
Great Sierra Wagon Road
  • NRHP
Yosemite National Park
Ryan House and Lost Horse Well
  • NRHP
Joshua Tree National Park
Perry's Victory and International Peace Memorial South Bass Island
Bergstresser Covered Bridge
  • NRHP
Canal Winchester
Station Road Bridge Brecksville
Station Road Bridge Brecksville
Statue of Liberty National Monument New Jersey
Statue of Liberty National Monument New York
Ash Fork Steel Dam
  • NRHP
Williams Ranger District, Kaibab NF
Boulder Bridge and Ross Drive Bridge
  • NRHP
Washington, DC
Water Reclamation Plant
  • NRHP
Grand Canyon NP - South Rim
Sabine Pass Lighthouse
  • NRHP
Cameron
Baton Rouge Waterworks Company Standpipe
  • NRHP
Baton Rouge
Pendaries Grist Mill
  • NRHP
Rociada
Tybo Charcoal Kilns
  • NRHP
Tonopah
Coolidge Dam
  • NRHP
San Carlos
Coolidge Dam
  • NRHP
San Carlos
Espada Aqueduct San Antonio
Beaver Creek Bridge
  • NRHP
Wind Cave National Park
Succesful Sales
  • NRHP
Toledo
Eldean Covered Bridge
  • NRHP
Troy
Foreaker Bridge
  • NRHP
Graysville
Twin Arch Stone Culvert
  • NRHP
Troy
Scottown Covered Bridge
  • NRHP
Scottown
Harshman Covered Bridge
  • NRHP
Fairhaven
Brubaker Covered Bridge
  • NRHP
Gratis
Warnke Covered Bridge
  • NRHP
Lewisburg
Third Street Bridge
  • NRHP
Canton
Newton Falls Covered Bridge
  • NRHP
Newton Falls
Mt Olive Road Covered Bridge
  • NRHP
Allensville
Eakin Mill Covered Bridge
  • NRHP
Arbaugh
Reed Covered Bridge
  • NRHP
Marysville
Deeds' Barn
  • NRHP
Kettering
Y Bridge
  • NRHP
Zanesville
Huffman Covered Bridge
  • NRHP
Middleburg
Dresden Suspension Bridge
  • NRHP
Dresden
Caledonia Bowstring Bridge
  • NRHP
Caledonia
Black River Viaduct, Baltimore And Ohio Railroad
  • NRHP
Lodi
Lockington Locks Historical Area
  • NRHP
Lockington
Chuckery Race
  • NRHP
Cuyahoga Falls
Kirby, James, Mill
  • NRHP
West Richfield
William Prindle Livery Stable
  • NRHP
Marshall
William H Grant House
  • NRHP
Middleport
Mill Creek Park Suspension Bridge
  • NRHP
Youngstown
Ponn Humpback Covered Bridge
  • NRHP
Wilkesville
Interurban Bridge
  • NRHP
Waterville
Interurban Bridge
  • NRHP
Waterville
Moores, JH, Memorial Natatorium
  • NRHP
Lansing
Chapin Mine Steam Pump Engine
  • NRHP
Iron Mountain
Masonic Temple Building
  • NRHP
Kalamazoo
Sun Building
  • NRHP
Washington, DC
Shay Complex
  • NRHP
Harbor Springs
Geeting Covered Bridge
  • NRHP
Lewisburg
St Clair Street Bridge
  • NRHP
Eaton
Roberts Covered Bridge
  • NRHP
Eaton
Ontonagon Lighthouse
  • NRHP
Ontonagon
Stannard Rock Lighthouse
  • NRHP
Lake Superior
Davis Island Lock and Dam Site
  • NRHP
Avalon
Experimental Mine, US Bureau Of Mines
  • NRHP
Bruceton
St Clair River Tunnel Port Huron
Duquesne Incline
  • NRHP
Pittsburgh
South Salem Covered Bridge
  • NRHP
South Salem
Fort Niagara Light
  • NRHP
Youngstown
Byer Covered Bridge
  • NRHP
Byer
Shaw Historic District
  • NRHP
Doylestown
Wagner Covered Bridge No 19
  • NRHP
Newlin
Josiah Hess Covered Bridge No 122
  • NRHP
Forks
Fowlersville Covered Bridge
  • NRHP
Fowlersville
Johnson Covered Bridge No 28
  • NRHP
Catawissa
Dunlap's Creek Bridge
  • NRHP
Brownsville
Patterson Covered Bridge No 112
  • NRHP
Orangeville
Kramer Covered Bridge No 113
  • NRHP
Rohrsburg
Riegel Covered Bridge No 6
  • NRHP
Catawissa
Rohrbach Covered Bridge No 24
  • NRHP
Catawissa
Parr's Mill Covered Bridge No 10
  • NRHP
Parr's Mill
Andrew Ellicott House
  • NRHP
Lancaster
Thomas Covered Bridge
  • NRHP
Creekside
Trusal Covered Bridge
  • NRHP
Willet
Harmon's Covered Bridge
  • NRHP
Willet
Kintersburg Covered Bridge
  • NRHP
Kintersburg
John Roebling House
  • NRHP
Saxonburg
St Mary's Covered Bridge
  • NRHP
Orbisonia
Thomas Viaduct, Baltimore and Ohio Railroad Relay
Thomas Viaduct, Baltimore and Ohio Railroad Relay
Reading-Halls Station Bridge
  • NRHP
Muncy
Bergy Bridge Historic District
  • NRHP
Harleysville
Skippack Bridge
  • NRHP
Evansburg
Bowman Mill Covered Bridge
  • NRHP
New Reading
Elmwood
  • NRHP
Sault Ste Marie
Neuweiler Brewery
  • NRHP
Allentown
Starrucca Viaduct
  • NRHP
Lanesboro
Loller Academy
  • NRHP
Hatboro
Ellsworth Power House and Dam
  • NRHP
Ellsworth
Waldo-Hancock Bridge
  • NRHP
Verona
Waldo-Hancock Bridge
  • NRHP
Prospect
Ashley Planes
  • NRHP
Ashley
Coplay Cement Company Kilns
  • NRHP
Coplay
Union Canal Tunnel Lebanon
Slate Creek Bridge
  • NRHP
Slate Creek
Pittsburgh and Lake Erie Railroad Complex
  • NRHP
Pittsburgh
Manitou Springs Bridges (2)
  • NRHP
Manitou Springs
Avery Bridges
Hoehne and Aguilar
Pottstown Roller Mill
  • NRHP
Pottstown
Sidney Waterworks And Electric Light Building
  • NRHP
Sidney
Tunkhannock Viaduct
  • NRHP
Nicholson
Western Division-Pennsylvania Canal
  • NRHP
Torrance
St Vincent Archabbey Gristmill
  • NRHP
Latrobe
Carrollton Viaduct Baltimore
St Boniface Roman Catholic Church
  • NRHP
Pittsburgh
Sixteenth Street Bridge
  • NRHP
Pittsburgh
Lehigh Canal - Lehigh Gap to S Walnutport
  • NRHP
Lehigh Gap
Lehigh Canal - Lehigh Gap to S Walnutport
  • NRHP
Walnutport
Pierce Arrow Factory Complex
  • NRHP
Buffalo
Stillwater Covered Bridge No 134
  • NRHP
Stillwater
Snyder Covered Bridge No 17
  • NRHP
Slabtown
Rupert Covered Bridge No 56
  • NRHP
Rupert
Jud Christie Covered Bridge No 95
  • NRHP
Millville
Eckman, Sam, Covered Bridge No 92
  • NRHP
Millville
Creasyville Covered Bridge
  • NRHP
Millville
Shoemaker Covered Bridge
  • NRHP
Iola
Twin Bridges-West Paden Covered Bridge No 121
  • NRHP
Forks
John B McCormick House
  • NRHP
Georgeville
Davis Covered Bridge
  • NRHP
Catawissa
Hollingshead Covered Bridge No 40
  • NRHP
Catawissa
Y Covered Bridge No 156
  • NRHP
Central
Main Street Station and Trainshed Richmond
Furnace Covered Bridge No 11
  • NRHP
Esther
Wanich Covered Bridge No 69
  • NRHP
Fernville
Twin Bridges-East Paden Covered Bridge No 120
  • NRHP
Forks
Agricultural Engineering Building
  • NRHP
Madison
South Washington Street Parabolic Bridge
  • NRHP
Binghamton
Gladden Windmill
  • NRHP
Napoli
Chain Bridge
  • NRHP
Easton
Lehigh Canal Allentown to Hopeville Section
  • NRHP
Bethlehem
Lehigh Canal Allentown to Hopeville Section
  • NRHP
Allentown
Elkins Coal and Coke Company Historic District Bretz
Montgomery Union Station Montgomery
Sloss Blast Furnace Site Birmingham
Jacobsburg Historic District
  • NRHP
Nazareth
Double-Span Whipple Bowstring Truss Bridge
  • NRHP
Claverack
Whipple Cast and Wrought Iron Bowstring Truss Bridge
  • NRHP
Albany
MacDonald Farm
  • NRHP
Meredith
Water, Wall, and Pine Streets Lenticular Truss Bridges
  • NRHP
Homer
Watervliet Side Cut Locks
  • NRHP
Watervliet
Packard Motor Corporation Building
  • NRHP
Philadelphia
Philadelphia Racquet Club
  • NRHP
Philadelphia
Moore, Benjamin C, Mill
  • NRHP
Lockport
Five Lock Combine and Locks 37 and 38, Black River Canal
  • NRHP
Boonville
Onondaga County Savings Bank Building
  • NRHP
Syracuse
Weighlock Building
  • NRHP
Syracuse
Lock 18 of Enlarged Erie Canal
  • NRHP
Cohoes
Fort Ontario
  • NRHP
Oswego
Nine Mile Creek Aqueduct
  • NRHP
Camillus
Syracuse Savings Bank
  • NRHP
Syracuse
Sevenmile Bridge
  • NRHP
Creede
Old Mission Dam San Diego
Kingston-Port Ewen Suspension Bridge
  • NRHP
Kingston
Perrine's Bridge
  • NRHP
Rosendale
Gardiners Island Windmill
  • NRHP
East Hampton
Aransas Pass Light Station
  • NRHP
Port Aransas
Archer County Courthouse and Jail
  • NRHP
Archer City
Church Nuestra Senora de la Concepcion y San Fernando of Toa Alta
  • NRHP
Toa Alta
1931 Tempe Bridge
  • NRHP
Tempe
Verde River Sheep Bridge
  • NRHP
Carefree
Iron Turbine Windmill
  • NRHP
Prescott
Round Lake Logging Dam
  • NRHP
Fifield
Hole-in-the-Rock Trail
  • NRHP
Glen Canyon National Recreation Area
Hole-in-the-Rock Trail
  • NRHP
Escalante
Hole-in-the-Rock Trail
  • NRHP
Grand Staircase Escalante-National Monument
Galveston Causeway
  • NRHP
Galveston
Johnson, SC, and Son Administration Building and Research Tower Racine
Rice Hotel
  • NRHP
Houston
Thurber Historic District
  • NRHP
Thurber
Warren Covered Bridge
  • NRHP
Warren
Paddock Viaduct
  • NRHP
Fort Worth
Mull Covered Bridge
  • NRHP
Burgoon
Bennett Schoolhouse Road Covered Bridge
  • NRHP
Minford
Lockington Covered Bridge
  • NRHP
Lockington
Parker Covered Bridge
  • NRHP
Upper Sandusky
Swartz Covered Bridge
  • NRHP
Wyandot
Ada Belle Oil Well
  • NRHP
Batson
High Bridge Aqueduct and Water Tower
  • NRHP
New York City
Arch in the Town of Marshall
  • NRHP
Marshall
Seneca Quarry Seneca
Mexican Canyon Trestle
  • NRHP
Cloudcroft
Park of the Canals
  • NRHP
Mesa
Walnut Canyon Dam
  • NRHP
Flagstaff
Poland Tunnel
  • NRHP
Poland
Lusk Home and Mill Site
  • NRHP
Marshall
Hotel Westward Ho
  • NRHP
Phoenix
Bosque County Courthouse
  • NRHP
Meridian
Schulenburg Cotton Compress
  • NRHP
Schulenburg
Johnson Road Covered Bridge
  • NRHP
Petersburg
Lake Hamilton Dam
  • NRHP
Struthers
White Bridge
  • NRHP
Poland Village
Dudley Station Historic District
  • NRHP
Boston
Waco Suspension Bridge
  • NRHP
Waco
Bluff Dale Suspension Bridge
  • NRHP
Bluff Dale
Manzanola Bridge
Manzanola
Mulberry Creek Bridge
  • NRHP
Schulenburg
Fourth Street Bridge
  • NRHP
Canon City
Bridge No 10 - Adelaide Bridge
  • NRHP
Florence
Crystal Mill
  • NRHP
Crystal
Fifth Street Bridge
Grand Junction
D and RG Narrow Gauge Trestle Cimarron
Germantown Covered Bridge
Germantown
Creamery Bridge
  • NRHP
Osawatomie
Corsicana Oil Field Discovery Well
  • NRHP
Corsicana
Moonlight Towers
  • NRHP
Austin
Galveston Seawall
  • NRHP
Galveston
Medina Dam
  • NRHP
Castroville
Armstrong Tunnel
  • NRHP
Pittsburgh
Sixth Street Bridge
  • NRHP
Pittsburgh
Seventh Street Bridge
  • NRHP
Pittsburgh
Ninth Street Bridge
  • NRHP
Pittsburgh
Coraopolis Bridge
  • NRHP
Coraopolis
Kennedy Tailing Wheels
  • NRHP
Jackson
Old Fresno Water Tower
  • NRHP
Fresno
Hudspeth County Courthouse
  • NRHP
Sierra Blanca
Otway Covered Bridge
  • NRHP
Otway
Goodyear Airdock
  • NRHP
Akron
Tilton Island Park Bridge
  • NRHP
Tilton
Saffold Dam
  • NRHP
Seguin
Tyler Hydraulic-Fill Dam
  • NRHP
Tyler
Cuero Hydroelectric Plant
  • NRHP
Cuero
Nevada-California Power Company Substation and Auxiliary Power Building
  • NRHP
Tonopah
Saline Valley Salt Tram Historic Structure
  • NRHP
Keeler
Cassidy Mill
  • NRHP
Cleveland
James Daniel Derby House
  • NRHP
Glendale, CA
Carleton Bridge
  • NRHP
East Swanzey
Everett Road Covered Bridge
Cuyahoga Valley National Park
Loucks Covered Bridge
Canal Winchester
Stemen Road Covered Bridge
Pickerington
Sawyers Crossing Covered Bridge
  • NRHP
Swanzey
Slate Covered Bridge
  • NRHP
Westport
Coombs Covered Bridge
  • NRHP
Winchester
Stark Covered Bridge
  • NRHP
Groveton
Mount Orne Covered Bridge
  • NRHP
Lunenburg
Mount Orne Covered Bridge
  • NRHP
Lancaster
Lower Blackburn Grade Bridge
  • NRHP
Bridgeville
Swiftwater Covered Bridge
  • NRHP
Bath
Fort Griffin Brazos River Bridge
  • NRHP
Fort Griffin
Pope Street Bridge
  • NRHP
St Helena
Stone Arch Underpass
  • NRHP
Lebanon
Hillsborough Railroad Bridge
  • NRHP
Hillsborough
Colorado Street Bridge
  • NRHP
Pasadena
Ash Street School
  • NRHP
Manchester
Harvey House Railroad Depot
  • NRHP
Barstow
Travelers' Hotel
  • NRHP
Sacramento
Conservatory of Flowers
  • NRHP
San Francisco
Outlet Gates and Gatekeeper's Cabin
  • NRHP
Tahoe City
Illinois and Michigan Canal Joliet
County Farm Bridge
  • NRHP
Wilton
Hotel Stockton
  • NRHP
Stockton
Canon Ranch Railroad Eclipse Windmill
  • NRHP
Sheffield
Bement Covered Bridge
  • NRHP
Bradford
Felton Covered Bridge
  • NRHP
Felton
McClintock Storage Warehouse
  • NRHP
San Diego
Folsom Powerhouse Folsom
EJP County Line Bridge
  • NRHP
Hyattville
Rairden Bridge
  • NRHP
Manderson
San Francisco Ferry Building
  • NRHP
San Francisco
Tower Bridge
  • NRHP
West Sacramento
Tower Bridge
  • NRHP
Sacramento
Riverside Swinging Bridge
  • NRHP
Riverside
Hopkinton Railroad Covered Bridge
  • NRHP
Hopkinton
Millard House
  • NRHP
Pasadena
Oil Springs Oil Field Discovery Well
  • NRHP
Woden
Fire Station No 23
  • NRHP
Los Angeles
Pittsfield Center Historic District
  • NRHP
Pittsfield
Pigeon Point Lighthouse
  • NRHP
Pescadero
Little Rock Creek Dam
Pearland
Saugus Iron Works National Historic Site Saugus
Allegheny Portage Railroad National Historic Site Pennsylvania
Gianella Bridge
  • NRHP
Hamilton City
Gianella Bridge
  • NRHP
Hamilton City
I Street Bridge
  • NRHP
West Sacramento
I Street Bridge
  • NRHP
Sacramento
Edificio Jose de Diego
  • NRHP
Mayaguez
Hurricane Canal
  • NRHP
Hurricane
San Buenaventura Mission Aqueduct
  • NRHP
Ventura
Lincoln Highway Bridge
  • NRHP
Dugway Proving Ground
Stockton Savings and Loan Society Bank
  • NRHP
Stockton
Moses Rodgers House
  • NRHP
Stockton
GAPA Launch Site and Blockhouse
  • NRHP
Knolls
Knight Grain Elevator
  • NRHP
Eureka
Centennial-Eureka Mine
  • NRHP
Eureka
Eagle and Blue Bell Mine
  • NRHP
Eureka
Mill Creek Zanja
  • NRHP
Redlands
Sunbeam Mine
  • NRHP
Mammoth
Waterloo Covered Bridge
  • NRHP
Waterloo
Rowell's Covered Bridge
  • NRHP
Hopkinton
Lake Mattamuskeet Pump Station
  • NRHP
Swanquarter
Southern Pacific Railroad: Ogden-Lucin Cut-Off Trestle
  • NRHP
Ogden
Finstad's Auto Marine Shop
  • NRHP
Ranier
Roanoke Canal
  • NRHP
Roanoke Rapids
Mountain Dell Dam
  • NRHP
Salt Lake City
Skeen's Mill Covered Bridge
  • NRHP
Flint Hill
Pisgah Community Covered Bridge
  • NRHP
Pisgah
Hayground Windmill
  • NRHP
East Hampton
Wainscott Windmill
  • NRHP
East Hampton
Second Tompkins County Courthouse
  • NRHP
Ithaca
Bridge L-158
  • NRHP
Goldens Bridge
Shelter Island Windmill
  • NRHP
Shelter Island
Windmill at Water Mill
  • NRHP
Southampton
Durango-Silverton Narrow-Gauge Railroad Durango
Durango-Silverton Narrow-Gauge Railroad Silverton
Alcoa Edgewater Works
  • NRHP
Edgewater
Reaction Motors Rocket Test Facility
  • NRHP
Franklin Lakes
Harlem Fire Watchtower
  • NRHP
New York City
William E Ward House
  • NRHP
Rye
Hackensack Water Company Complex
  • NRHP
Weehawken
Erie-Lackawanna Railroad Terminal at Hoboken
  • NRHP
Hoboken
Fisgard Lighthouse National Historic Site Colwood
Hog Island Cranes
  • NRHP
Trenton
Green Sergeants Covered Bridge
  • NRHP
Stockton
Dock Bridge
  • NRHP
Newark
Delaware, Lackawanna and Western Railroad Station
  • NRHP
Dover
Finn's Point Rear Range Light
  • NRHP
Salem
Jeffrey's Hook Lighthouse
  • NRHP
New York City
Newark Metropolitan Airport Buildings
  • NRHP
Newark
Auditorium Building, Roosevelt University Chicago
Eastern Lock of the Chesapeake and Delaware Canal
  • NRHP
Delaware City
Morris Canal
  • NRHP
Morris Canal Route
Morris Canal
  • NRHP
Morris Canal Route
Morris Canal
  • NRHP
Phillipsburg
Morris Canal
  • NRHP
Morris Canal Route
Morris Canal
  • NRHP
Jersey City
Morris Canal
  • NRHP
Morris Canal Route
Liston Ranger Rear Light Station
  • NRHP
Port Penn
Cherbourg Round Barn
  • NRHP
Little Creek
Lonaconing Furnace
  • NRHP
Lonaconing
Seaford Station Complex
  • NRHP
Seaford
Thomas Point Shoals Light Station Annapolis
Pagan Creek Dike
  • NRHP
Lewes
Old Customshouse
  • NRHP
Wilmington
Bullfrog Road Bridge
  • NRHP
Taneytown
Bennies Hill Road Bridge
  • NRHP
Middletown
Fourpoints Bridge
  • NRHP
Emmitsburg
LeGore Bridge
  • NRHP
Woodsboro
Neshanic Mills
  • NRHP
Neshanic
Bloomington Viaduct
  • NRHP
Bloomington
Ravenshurst
  • NRHP
Glen Arm
Covington and Cincinnati Suspension Bridge Cincinnati
Covington and Cincinnati Suspension Bridge Covington
Patterson Viaduct Ruins
  • NRHP
Ilchester
Patterson Viaduct Ruins
  • NRHP
Catonsville
Louisville Water Company Pumping Station Louisville
Jericho Covered Bridge
  • NRHP
Jerusalem
Jericho Covered Bridge
  • NRHP
Kingsville
Rockford Park
  • NRHP
Wilmington
Utica Covered Bridge
  • NRHP
Thurmont
Loys Station Covered Bridge
  • NRHP
Thurmont
Roddy Road Covered Bridge
  • NRHP
Thurmont
Old Mill Road Bridge
  • NRHP
Rocky Ridge
Poffenberger Road Bridge
  • NRHP
Middletown
Burks' Distillery Loretto
Shreveport Water Works Company, Pump Station Shreveport
Valley Railroad Stone Bridge
  • NRHP
Jolivue
Mansion Truss Bridge
Altavista
Cat Rock Sluice of the Roanoke Navigation
  • NRHP
Brookneal
Clifton Park Valve House
  • NRHP
Baltimore
B and O Railroad Potomac River Crossing
  • NRHP
Harpers Ferry
B and O Railroad Potomac River Crossing
  • NRHP
Harpers Ferry
B and O Bridge
  • NRHP
Keedysville
Howard Street Tunnel
  • NRHP
Baltimore
Johns Hopkins Hospital Complex
  • NRHP
Baltimore
Springwood Truss Bridge
Springwood
Phoenix Bridge
  • NRHP
Eagle Rock
Columbus Historic Riverfront Industrial District Columbus
Augusta Canal National Heritage Area Augusta
Gholson Bridge
  • NRHP
Lawrenceville
Washington Iron Furnace
  • NRHP
Rocky Mount
Beginning Point of the US Public Land Survey East Liverpool
Beginning Point of the US Public Land Survey Glasgow
Catoctin Creek Bridge
  • NRHP
Waterford
Fort Ward
  • NRHP
Alexandria
Goshen Land Company Bridge
  • NRHP
Goshen
First National Bank Building
  • NRHP
Richmond
Crozet House
  • NRHP
Richmond
Colvin Run Mill
  • NRHP
Great Falls
Eads Bridge East St Louis
Eads Bridge City of St Louis
White's Mill
  • NRHP
Abingdon
Cape Canaveral Air Force Station Cocoa
Fort Zachary Taylor Key West
Midway Mill
Midway Mills
Oak Ridge Railroad Overpass
  • NRHP
Shipman
Linville Creek Bridge
  • NRHP
Broadway
Castle Gatehouse, Washington Aqueduct
  • NRHP
Washington, DC
Jack's Creek Covered Bridge
  • NRHP
Woolwine
Wellsburg Wharf
  • NRHP
Wellsburg
St Louis Union Station City of St Louis
Thomas J Michie House
  • NRHP
Staunton
Peavey-Haglin Experimental Concrete Grain Elevator St Louis Park
Perdido Key Historic District Warrington
Rock Harbor Lighthouse
  • NRHP
Isle Royale National Park
Elm Grove Stone Arch Bridge
  • NRHP
Wheeling
New Salem Covered Bridge
  • NRHP
Commerce
Western Maryland Railroad Right-of-Way, Milepost 126 to Milepost 160
  • NRHP
North Branch
Western Maryland Railroad Right-of-Way, Milepost 126 to Milepost 160
  • NRHP
Woodmont
Western Maryland Railroad Right-of-Way, Milepost 126 to Milepost 160
  • NRHP
Jerome
Washington Monument Washington, DC
Wilkes Campsite
  • NRHP
Hawaii Volcanoes National Park
Tinkers Creek Aqueduct
  • NRHP
Cuyahoga Valley National Park
West Fifth Street Bridge
  • NRHP
Ashtabula
Locust Creek Covered Bridge
  • NRHP
Hillsboro
Pocahontas Times Print Shop
  • NRHP
Marlinton
Kesler Covered Bridge
  • NRHP
Homer
Kilgore Mill Covered Bridge and Mill Site
  • NRHP
Bethlehem
Au Sable Light Station
  • NRHP
Pictured Rocks National Lakeshore
Bighorn Ditch Headgate Fort Smith
National Road
  • NRHP
Cambridge
Staats Mill Covered Bridge
  • NRHP
Staats Mill
Pool's Mill Covered Bridge
  • NRHP
Cumming
Railroad Overpass at Ocmulgee
  • NRHP
Macon
Henry Crawford Tucker Log House and Farmstead
  • NRHP
Moultrie
Carroll-Richardson Grist Mill
  • NRHP
Cave Spring
Ruff's Mill and Concord Covered Bridge
  • NRHP
Smyrna
Coheelee Creek Covered Bridge
  • NRHP
Hilton
Ghent Historic District
  • NRHP
Norfolk
Woodmanston Site
  • NRHP
Riceboro
New Hampton Pony Pratt Truss Bridge
  • NRHP
Changewater
New Hampton Pony Pratt Truss Bridge
  • NRHP
Hampton
Glen Gardner Pony Pratt Truss Bridge
  • NRHP
Glen Gardner
Henry Asbury House
  • NRHP
Clarkesville
Richmond Hill Plantation
  • NRHP
Richmond Hill
Georgia Institute of Technology Historic District
  • NRHP
Atlanta
Van Metre Ford Stone Bridge
  • NRHP
Martinsburg
Delaware Aqueduct
  • NRHP
Lackawaxen
Delaware Aqueduct
  • NRHP
Minisink Ford
Tanner's Mill
  • NRHP
Gainesville
Fireproof Building Charleston
Fort Barrington
  • NRHP
Cox
Techwood Homes Historic District
  • NRHP
Atlanta
Penn Center Historic District Frogmore
Van Winkle, E, Gin and Machine Works
  • NRHP
Atlanta
Crown Mill Historic District
  • NRHP
Dalton
Auchumpkee Creek Covered Bridge
  • NRHP
Thomaston
Rose Hill Mill and House
  • NRHP
Thomaston
US Post Office and Courthouse
  • NRHP
Waycross
Cape Florida Lighthouse
  • NRHP
Bill Baggs Cape Florida State Park
Overseas Highway and Railway Bridges
  • NRHP
Long Key
Overseas Highway and Railway Bridges
  • NRHP
Bahia Honda Key
West Martello Tower
  • NRHP
Key West
Pensacola Lighthouse and Keeper's Quarters
  • NRHP
Pensacola
West End-North Side Bridge
  • NRHP
Pittsburgh
St Augustine Lighthouse and Keeper's Quarters
  • NRHP
St Augustine
Spanish Coquina Quarries
  • NRHP
St Augustine Beach
Cape St George Light
  • NRHP
Little St George Island
Chicago, Burlington, and Quincy Roundhouse and Locomotive Shop
  • NRHP
Aurora
Western Springs Water Tower
  • NRHP
Western Springs
Red Covered Bridge
  • NRHP
Princeton
Fountain Creek Bridge
  • NRHP
Waterloo
Stone Arch Bridge
  • NRHP
Champaign
Baha'i Temple
  • NRHP
Wilmette
Mary's River Covered Bridge
  • NRHP
Chester
Old Stone Arch, National Road
  • NRHP
Marshall
General Dean Suspension Bridge
  • NRHP
Carlyle
Stone Quarry Bridge
  • NRHP
Charleston
Blakeman Bridge
  • NRHP
Charleston
Airtight Bridge
  • NRHP
Charleston
White Hall Foundry
  • NRHP
White Hall
Manhattan Building
  • NRHP
Chicago
Peoria Mineral Springs
  • NRHP
Peoria
Peoria Waterworks
  • NRHP
Peoria
Boeckman Bridge
  • NRHP
St Elizabeth
Locust Creek Covered Bridge
  • NRHP
Laclede
Russian Bishop's House Sitka
Sugar Creek Covered Bridge
  • NRHP
Chatham
Thompson Mill Covered Bridge
  • NRHP
Cowden
Beatrice Chautauqua Pavilion and Gatehouse
  • NRHP
Beatrice
Belle Fourche Dam
  • NRHP
Belle Fourche
Hotel Baker
  • NRHP
St Charles
Harrison St Bridge
  • NRHP
Charleston
Old Stone Arch Bridge
  • NRHP
Clark Center
Burlington Headquarters Building
  • NRHP
Omaha
Woral C Smith Lime Kiln and Limestone House
  • NRHP
Fairbury
Illinois Iron Furnace
  • NRHP
Rosiclare
Richard E Dill House
  • NRHP
Alexandria
Cabin Creek Covered Bridge
  • NRHP
Tollesboro
Trans-Canyon Telephone Line, Grand Canyon National Park
  • NRHP
Grand Canyon NP - North Rim
Trans-Canyon Telephone Line, Grand Canyon National Park
  • NRHP
Grand Canyon NP - South Rim
Trans-Canyon Telephone Line, Grand Canyon National Park
  • NRHP
Grand Canyon
Mayo, John C C, Mansion and Office
  • NRHP
Paintsville
Dexter Community House
  • NRHP
Dexter
Gottschalk, Frederick L and L Frederick, Houses
  • NRHP
Columbus
DeWitt Flour Mills and King Iron Bridge
  • NRHP
DeWitt
Elkader Keystone Bridge
  • NRHP
Elkader
Grand Encampment Mining Region: Boston Wyoming Smelter Site
  • NRHP
Encampment, WY
Grand Encampment Mining Region: Ferris-Haggarty Mine Site
  • NRHP
Encampment, WY
Boone Viaduct
  • NRHP
Boone
Yatesville Covered Bridge
  • NRHP
Fallsburg
Melan Bridge
  • NRHP
Rock Rapids
Cedar Covered Bridge
Winterset
Will County Historical Society Headquarters
  • NRHP
Lockport
Cutler-Donahoe Covered Bridge
  • NRHP
Winterset
Hogback Covered Bridge
  • NRHP
Winterset
Holliwell Covered Bridge
  • NRHP
Winterset
Roseman Covered Bridge
  • NRHP
Winterset
Nelson, Daniel, House and Barn
  • NRHP
Oskaloosa
John K Voorhees House
  • NRHP
Oskaloosa
Marston Water Tower
  • NRHP
Ames
Pathfinder Dam
  • NRHP
Alcova
Soper's Mill Bridge
Ames
Keokuk Lock and Dam
  • NRHP
Keokuk
Cummins Creek Bridge
  • NRHP
Round Top
Fort Caspar (Boundary Increase)
  • NRHP
Casper
Pierce and Walter Butler House
  • NRHP
St Paul
Como Park Conservatory
  • NRHP
St Paul
Anoka-Champlin Mississippi River Bridge
  • NRHP
Anoka
Anoka-Champlin Mississippi River Bridge
  • NRHP
Champlin
Delta Covered Bridge
Delta
Brainerd Water Tower
  • NRHP
Brainerd
Elevated Metal Water Tank, Crosby
  • NRHP
Crosby
Elevated Metal Water Tank, Cuyuna
  • NRHP
Cuyuna
Elevated Metal Water Tank, Deerwood
  • NRHP
Deerwood
Elevated Metal Water Tank, Ironton
  • NRHP
Ironton
Elevated Metal Water Tank, Trommald
  • NRHP
Trommald
Smith Covered Bridge
  • NRHP
Rushville
Chicago, Milwaukee and St Paul Freight House
  • NRHP
Stillwater
Kasson Water Tower
  • NRHP
Kasson
Fort Benton Bridge
  • NRHP
Fort Benton
Miles City Waterworks Building and Pumping Plant Park
  • NRHP
Miles City
G A Carlson Lime Kiln
  • NRHP
Red Wing
Hollands Grist Mill
  • NRHP
Milbank
Ramsey Park Swayback Bridge
  • NRHP
Redwood Falls
Foshay Tower
  • NRHP
Minneapolis
Carriage Paths, Bridges and Gatehouses
  • NRHP
Acadia National Park
Bailey Island Cobwork Bridge
  • NRHP
Harpswell
Star-Clipper-Canfield Building and Winding Stairway
  • NRHP
Traer
Gumbel Building
  • NRHP
Kansas City
Camp Clarke Bridge Site
  • NRHP
Bridgeport
Pipestone Water Tower
  • NRHP
Pipestone
Beverly Railroad Bridge
  • NRHP
Beverly
Beverly Railroad Bridge
  • NRHP
Beverly
Capital Boulevard Crossing
  • NRHP
Tumwater
City Waterway Bridge
  • NRHP
Tacoma
Columbia River Bridge
  • NRHP
East Wenatchee
Columbia River Bridge
  • NRHP
Wenatchee
Cowen Park Bridge
  • NRHP
Seattle
Curlew Bridge
  • NRHP
Curlew
Rosario
  • NRHP
Orcas Island
Ogilvie Watertower
  • NRHP
Ogilvie
Baker River Bridge
  • NRHP
Concrete
Duckabush River Bridge
  • NRHP
Duckabush
Dungeness River Bridge
  • NRHP
Sequim
East 34th Street Bridge
  • NRHP
Tacoma
Elwha River Bridge
  • NRHP
Elwha
F Street Bridge
  • NRHP
Palouse
Fairfax Bridge
  • NRHP
Melmont
Goldsborough Creek Bridge
  • NRHP
Shelton
Grand Coulee Bridge
  • NRHP
Grand Coulee
High Steel Bridge
  • NRHP
Shelton
Hoquiam River Bridge
  • NRHP
Hoquiam
Idaho and Wash Northern RR Bridge
  • NRHP
Metaline Falls
Indian Timothy Memorial Bridge
  • NRHP
Pomeroy
Manning-Rye Covered Bridge
  • NRHP
Colfax
Middle Fork Nooksack River Bridge
  • NRHP
Acme
Montlake Bridge
  • NRHP
Seattle
Mount Baker Ridge Tunnel
  • NRHP
Seattle
North Hamma Hamma River Bridge
  • NRHP
Eldon
South Hamma Hamma River Bridge
  • NRHP
Eldon
North 21st Street Bridge
  • NRHP
Tacoma
North 23rd Street Bridge
  • NRHP
Tacoma
Orient Bridge
  • NRHP
Orient
Cape Disappointment Historic District
  • NRHP
Ilwaco
Penstock Bridge
  • NRHP
Leavenworth
Purdy Bridge
  • NRHP
Purdy
Ravenna Park Bridge
  • NRHP
Seattle
Red Mountain Railroad Bridge
  • NRHP
Northport
Rosalia Railroad Bridge
  • NRHP
Rosalia
Schmitz Park Bridge
  • NRHP
Seattle
Snake River Bridge
  • NRHP
Lyons Ferry
Sunset Boulevard Bridge
  • NRHP
Spokane
12th Avenue South Bridge
  • NRHP
Seattle
Oregon Creek Covered Bridge
  • NRHP
North San Juan
University Bridge
  • NRHP
Seattle
Interlaken Mill Bridge
  • NRHP
Coventry
Jamestown Windmill
  • NRHP
Jamestown
Niagara Camp
  • NRHP
Tuolumne
Olmsted Station Powerhouse
  • NRHP
Provo
Beck No 2 Mine
  • NRHP
Eureka
Eureka Lilly Headframe
  • NRHP
Eureka
Lime Kilns
  • NRHP
Eureka
Water Lily Shaft
  • NRHP
Eureka
Yankee Headframe
  • NRHP
Eureka
Iowa Building
  • NRHP
Cedar Rapids
Horton Mill Covered Bridge
  • NRHP
Oneonta
J S Dorton Arena
  • NRHP
Raleigh
Lee County Courthouse
  • NRHP
Opelika
Fort Adams Newport
Mount Hope Bridge
  • NRHP
Bristol
Mount Hope Bridge
  • NRHP
Portsmouth
Western Clay Manufacturing Company
  • NRHP
Helena
Church of St Lawrence
  • NRHP
Asheville
Swann Covered Bridge
  • NRHP
Cleveland
Nectar Covered Bridge
  • NRHP
Nectar
Easley Covered Bridge
  • NRHP
Oneonta
Faro de la Isla de la Mona
  • NRHP
Mona Island
Faro de las Cabezas de San Juan
  • NRHP
Soroco
Faro de Morro
  • NRHP
San Juan
Faro de la Isla de Caja de Muertos
  • NRHP
Ponce
Salisbury Center Covered Bridge
  • NRHP
Salisbury Center
Continental Gin Company
  • NRHP
Birmingham
Five Mile Creek Bridge
  • NRHP
McCalla
Tintic Standard Reduction Mill
  • NRHP
Goshen
Boston and Providence Railroad Bridge
  • NRHP
East Providence
Albion Historic District
  • NRHP
Lincoln
Hanora Mills
  • NRHP
Woonsocket
Russell Company Upper Mill
  • NRHP
Middletown
Belt Railroad Engine House and Sandhouse
  • NRHP
San Francisco
Coon Box Fork Bridge
  • NRHP
Coon Box
Old Hill Place Bridge
  • NRHP
Fayette
Youngblood Bridge
  • NRHP
Union Church
Etters Bridge
  • NRHP
Lower Allen Township
Etters Bridge
  • NRHP
Fairview Township
Half-Chance Bridge
  • NRHP
Dayton
John Alexander Wheat Warehouse
  • NRHP
Milton
Goodrich Blacksmith Shop
  • NRHP
Milton
Peter McEwan Warehouse
  • NRHP
Milton
Goodrich-Buten House
  • NRHP
Milton
Gifford House
  • NRHP
Milton
De Jean House
  • NRHP
Milton
Water Tower
  • NRHP
Florence
Old Water and Electric Light Plant
  • NRHP
Holly Springs
Minneapolis Armory
  • NRHP
Minneapolis
Old River Bridge
  • NRHP
Benton
Grand Central Mine
  • NRHP
Mammoth
Showers Mine and Headframe
  • NRHP
Mammoth
Dollarway Road
  • NRHP
Redfield
Fort Negley
  • NRHP
Nashville
Fort Wood Historic District
  • NRHP
Chattanooga
Mechanical Engineering Hall, Vanderbilt University
  • NRHP
Nashville
McKenzie Windmill
  • NRHP
Georgetown
Chattanooga, Harrison, Georgetown and Charleston Railroad Tunnel
  • NRHP
Chattanooga
Lookout Mountain Incline Railway
  • NRHP
Chattanooga
Cumberland Mountain Tunnel
  • NRHP
Cowan
Bridge Mill Power Plant
  • NRHP
Pawtucket
Wanskuck Historic District
  • NRHP
Providence
Capt H P Farrar House
  • NRHP
Jackson
Camp Endicott
  • NRHP
North Kingstown
Harrisburg Covered Bridge
  • NRHP
Harrisburg
Elmwood Cemetery Office and Entrance Bridge
  • NRHP
Memphis, Tenn
Atlanta Dam and Power Plant
  • NRHP
Atlanta
Harris Warehouse
  • NRHP
Woonsocket
Walcott Covered Bridge
  • NRHP
Brooksville
Lenoir Cotton Mill
Lenoir City
Bourbon Iron Works
  • NRHP
Owingsville
Ringos Mill Covered Bridge
  • NRHP
Flemingsburg
Hillsboro Covered Bridge
  • NRHP
Hillsboro
Goddard Bridge
  • NRHP
Goddard
Colville Covered Bridge
  • NRHP
Millersburg
Ocoee Hydroelectric Plant No 2
  • NRHP
Ocoee
Fortress Rosecrans Site
  • NRHP
Murfreesboro
Louisville Trust Building
  • NRHP
Louisville
Five Mile Drive-Sutter Creek Bridge
  • NRHP
Ione
Oldtown Covered Bridge
  • NRHP
Oldtown
Lee's Creek Covered Bridge
  • NRHP
Dover
Martin Covered Bridge
  • NRHP
Plainfield
Martin Covered Bridge
  • NRHP
Marshfield
Jefferson Davis Monument
  • NRHP
Fairview
Peterson Avenue Hill
  • NRHP
Louisville
McKay, John A, House and Manufacturing Company
  • NRHP
Dunn
Mount Zion Covered Bridge
  • NRHP
Mooresville
Durgin Bridge
  • NRHP
Sandwich
Columbia Covered Bridge
  • NRHP
Lemington
Columbia Covered Bridge
  • NRHP
Columbia
Bath Covered Bridge
  • NRHP
Bath
Haverhill-Bath Covered Bridge
  • NRHP
Woodsville
Sulphite Railroad Bridge
  • NRHP
Franklin
County Farm Bridge
  • NRHP
Dover
Switzer Covered Bridge
  • NRHP
Switzer
Christman Covered Bridge
  • NRHP
Eaton
Monadnock Mills
  • NRHP
Claremont
Cornish-Windsor Covered Bridge
  • NRHP
Windsor
Cornish-Windsor Co