National and State Register
Big Thompson River Bridges I & II
Larimer County
Constructed in 1937, both of the single spans of this steel rigid connected camelback pony truss extend for 100 feet across the Big Thompson River.
Designed by the Colorado Department of Highways, fabricated by Midwest Steel & Iron Works, and built by M.E. Carlson, the bridges continue to provide an important transportation link along the route to Rocky Mountain National Park. These bridges are two of four located on the upper Big Thompson River, comprising the last surviving group of such trusses in the state.
National Register
Address
US Hwy. 34, Estes Park vicinity
Site Number
5LR.9514 & 5LR.9515