South Park Township, Pennsylvania

Green Man Tunnel (Allegheny County, Pennsylvania)
Tunnel under Allegheny Valley Railroad Co. on Piney Fork Road
Open to traffic

Library Road Bridge No. 1 Over Piney Fork Creek (Allegheny County, Pennsylvania)
Stone arch bridge over Piney Fork Peters Creek on PA 88 (Library Road)
Open to traffic

Library Road Bridge No. 2 Over Branch of Piney Fork Creek (Allegheny County, Pennsylvania)
Stone arch bridge over Piney Fork Branch Peters Creek on PA 88 (Library Road)
Open to traffic

McConkey Road Bridge (Allegheny County, Pennsylvania)
Closed-spandrel arch bridge over Catfish Run on McConkey Road
Open to traffic

PRR - Piney Fork Tunnel (Allegheny County, Pennsylvania)
Built 1924, abandoned 1962
Tunnel under Allegheny Valley Railroad Co. on abandoned PRR Peters Creek Branch
Intact but closed to all traffic