Tags: Website.
Pghbridges.com is a reference site created by Bruce S. Cridlebaugh. Formally titled Bridges and Tunnels of Allegheny County and Pittsburgh PA pghbridges.com has information on many of the structures of the area. It includes detailed histories and photographs for hundreds of bridges although since there are over 2000 bridges in the area (with a span of at least 6 feet) not all are included.