Hayden Arch Bridge, Historic concrete arch bridge in Park County, Wyoming
Hayden Arch Bridge is a concrete arch bridge that crosses the Shoshone River between towering rock canyon walls in Park County, Wyoming. The structure features a main arching span supported by two smaller approach arches that distribute traffic loads across natural stone piers.
Engineer C.E. Hayden designed this bridge in 1924 during a period of rapid highway expansion in Wyoming. The project represented the shift from wagon roads to automobile-friendly routes through mountain terrain.
The bridge stands as an engineering achievement from the 1920s, representing the transition from wagon trails to modern vehicle transportation in Wyoming.
The bridge sits on a former alignment of US Routes 14 and 16 and maintains a 20-foot (6 m) wide road surface serving local traffic. Visitors should know that it lies in a narrow canyon setting where access is limited to the existing roadway.
This is the only concrete arch bridge of its particular architectural design built in Wyoming during the early 1900s. The absence of similar structures elsewhere in the state makes it a rare example of a specific construction method from that era.
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