Glassport, Pennsylvania

Dravosburg Bridge - Older (Allegheny County, Pennsylvania)
Built 1889
Lost Pennsylvania through truss bridge over Monogahela River
Replaced by a new bridge 1951

Mansfield Bridge (Allegheny County, Pennsylvania)
Built 1951; rehabilitated 1981
Cantilevered through truss bridge over the Monongahela River in Dravosburg
Open to traffic

Taxiway A Tunnel (Allegheny County, Pennsylvania)
Tunnel under Taxiway A on Union Railroad & Lebanon Road/PA 885
Open to traffic