ECR Kooi Bridge

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]

ECR Kooi Bridge
U.S. National Register of Historic Places
The bridge in 1982
Nearest city	Monarch, Wyoming
Coordinates	44°54′33″N 107°5′13″W
Area	less than one acre
Built	1913
Built by	Gregg, Jack
Architectural style	Pratt pony truss
MPS	Vehicular Truss and Arch Bridges in Wyoming TR
NRHP reference No.	85000436[1]
Added to NRHP	February 22, 1985

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

1. "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
2. 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.