The concrete Rouch Gulch Bridge is technologically significant as an intact early example of highway bridge design by CHD. The Highway Commission had formulated design standards for concrete arch bridges as early as the 1910s, building them occasionally on state highways and distributing the plans to the individual counties. CHD never built many concrete arch bridges, preferring steel and concrete beam construction. Subsequent attrition has depleted their numbers further. As a result, relatively few state designed concrete arches remain in place in Colorado. The Rouch Gulch Bridge is particularly distinguished among the survivors for its excellent state of preservation.

As delineated by CHD engineers, the proposed bridge was configured as a single-span, reinforced concrete arch, carried by concrete abutments with angled wingwalls. The Rouch Gulch Bridge spanned 55 feet and had a 30 foot wide earth-filled deck flanked on both sides by CHD standard concrete guardrails with slotted cutouts. - NRHP, 27 November 2002