The ECR Kooi Bridge is a bridge in Sheridan County, Wyoming, located 2.7 miles (4.3 km) west of the community of Monarch. The bridge carries Sheridan County Road CN3-93 across the Tongue River. Contractor Jack Gregg built the bridge in 1913. The single-span pin-connected Pratt pony truss bridge is 81.6 feet (24.9 m) long with an 80-foot (24 m) span; it is the longest bridge of its type still in use in the Wyoming state and county highway system. The bridge's roadway was constructed with wooden stringers and decking; its guardrails are also wooden. The pin-connected Pratt pony truss was a common type of truss bridge in Wyoming, and the Kooi Bridge was one of the earlier bridges to use the design.[2]
The bridge was added to the National Register of Historic Places in 1985.[1] It was one of 31 Wyoming bridges added for their significance in the history of Wyoming bridge construction.[2]
References
- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- ^ a b Fraser, Clayton B. (May 24, 1982). "National Register of Historic Places Inventory - Nomination Form: Vehicular Truss and Arch Bridges in Wyoming". National Park Service. Retrieved April 24, 2013.
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