DSD Bridge over Cheyenne River, Road bridge in Niobrara County, Wyoming, US.

The DSD Bridge is a single-span steel truss bridge over the Cheyenne River on Niobrara County Road CN14-46. Its seven-panel Pennsylvania truss carries the roadway across a span of 130.67 feet (39.83 m).

The bridge was constructed in 1915 when rural Wyoming was expanding its transportation infrastructure. It gained recognition on the National Register of Historic Places in 1985, marking its formal acknowledgment as a historic structure.

The DSD Bridge represents early 20th-century engineering methods and stands as a testament to the transportation development in rural Wyoming communities.

The bridge carries Niobrara County Road CN14-46 over the Cheyenne River; the single-lane truss deck is reached by unpaved rural roads with no services nearby. The Historic American Engineering Record documentation for the crossing is filed as No. WY-64, listed under Riverview, Niobrara, Wyoming.

The bridge's seven-panel Pennsylvania truss is documented in the Historic American Engineering Record as No. WY-64, "Cheyenne River Bridge, County Road 46, Riverview, Niobrara, WY", with three photos and two data pages.