DSD Bridge over Cheyenne River - Credit: Wikimedia Commons
The DSD Bridge across the Cheyenne River in Wyoming is a single-span truss bridge built circa 1915. The steel seven-panel Pennsylvania truss spans on Niobrara County Road CN14-46. It was placed on the National Register of Historic Places as part of a thematic study of Wyoming river crossings in 1985. Read more on Wikipedia
Source: en.wikipedia.org