Powder River Bridge, U.S. Highway 14/16, Arvada, Sheridan County, WY

Significance: The Powder River Bridge is a three-span, steel rigid connected continuous Pratt Deck truss. As one of only two major highway deck trusses built in Wyoming, and the only continuous vehicular truss still in use in the State, it is an important representative of the most recent truss development. Although slightly less than fifty years old, it possesses the exceptional significance as the only one of its type for eligibility.
Survey number: HAER WY-58
Building/structure dates: 1933 Initial Construction