The Purdon Bridge is the only known example in California of a half-through truss, an unusual truss form in which the deck is carried approximately half-height between the top and bottom chords. - CA DoT
| Y/M/D | Person | Association | Description | Composition | Food | Event |
|---|---|---|---|---|---|---|
| Y/M/D | Person | Association | Description | Composition | Food | Event |
| 1889/00/00 | Cotton Bros and Co | Architect | A Pratt half-height through truss bridge is erected over South Yuba River on Purdon Road in Nevada County, California, by the Cotton Bros and Co. |
| Particulars for Purdon Crossing Bridge: | |
|---|---|
| Area of Significance | Architecture |
| Criteria | Architecture-Engineering |
| Structure type | Bridge |
| Area of Significance | Engineering |
| Structure System | Pratt Truss |
| Historic Use | Road-related |
| Owner | State |
| Sight Category | Structure |
| Bridge Truss Type | Through Truss |
| Area of Significance | Transportation |
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