Historic Bridges of the U.S.

Commercial Street Bridge (Allegheny County, Pennsylvania)
Built 1950; rehabilitated 1981
Open-spandrel arch bridge over Commercial Street on I-376 in Pittsburgh
Open to traffic

Frazier Street Bridge (Allegheny County, Pennsylvania)
Built 1951; rehabilitated 1981
Cantilevered deck truss bridge over local streets and the CSX Railroad on I-376 (Penn Lincoln Parkway) in Pittsburgh
Open to traffic

Penn Lincoln Parkway Bridge (Allegheny County, Pennsylvania)
Built 1951; rehabilitated 1981
Steel arch bridge over Ardmore Blvd. on I-376 (Penn Lincoln Parkway) in Pittsburgh
Open to traffic

Ramp A Bridge (Allegheny County, Pennsylvania)
Built 1952; rehabilitated 1981
Steel arch bridge over PA 8 (Ardmore Blvd.) on I-376 Ramp A in Pittsburgh
Open to traffic

Ramp D Bridge (Allegheny County, Pennsylvania)
Built 1952; rehabilitated 1981
Steel arch bridge over Ardmore Blvd. on I-376 Ramp D in Pittsburgh
Open to traffic