A comprehensive listing of the structures. Includes detailed histories and photographs.
Bridges and Tunnels of Allegheny County and Pittsburgh, PA
Bridges and Tunnels of Allegheny County and Pittsburgh, PA - pghbridges.com
2024-07-19
Recreation, Roads and Highways, North America, United States - Bridges and Tunnels of Allegheny County and Pittsburgh, PA. A comprehensive listing of the structures.