Pennsylvania Turnpike

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Allegheny Mountain Tunnel (Somerset County, Pennsylvania)
Westbound tunnel completed 1940; eastound tunnel completed 1965
Tunnel on Pennsylvania Turnpike/I-70/I-76
Open to traffic

Allegheny River I-76 Bridge (Allegheny County, Pennsylvania)
Built 1952; rehabilitated 1987; demolished and replaced in 2010
Lost deck truss bridge over Allegheny River on the Pennsylvania Turnpike (I-76) in Plum
Bridge has been demolished; replacement span open to traffic

Beaver River Pennsylvania Turnpike Bridge (Beaver County, Pennsylvania)
Built 1952; rehabilitated 1988
Deck truss bridge over Beaver River on the Pennsylvania Turnpike (I-76)
Open to traffic

Blue Mountain Tunnel (Franklin County, Pennsylvania)
Begun c.1885 by S. Penn. RR; first tube completed 1940 by Penna. Tpk. Comm.; second tube completed 1968
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic

Homewood Railroad Overpass (Beaver County, Pennsylvania)
Polygonal Warren pony truss bridge over Pennsylvania Turnpike (I-76) on CSX Transportation (?)
Removed but not replaced

Kittatinny Mountain Tunnel (Franklin County, Pennsylvania)
Begun c.1885 by S. Penn. RR; first tube completed 1940 by Penna. Tpk. Comm; second tube completed 1968.
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic

Laurel Hill Tunnel (Westmoreland County, Pennsylvania)
Begun c.1885 by S. Pennsylvania RR; completed 1940 by Penna. Tpk. Comm.; bypassed and abandoned in 1964
Tunnel on Abandoned alignment of Pennsylvania Turnpike
Currently used to test racecar aerodynamics by Chip Ganassi Racing. Closed to the public.

Mud Run Bridge (Carbon County, Pennsylvania)
Built 1957; rehabilitated 1992
Deck truss bridge over Mud Run on the Pennsylvania Turnpike (I-476)
Open to traffic

PA 26 Underpass (Bedford County, Pennsylvania)
Built 1939
Closed-spandrel arch bridge over PA 26 on Pennsylvania Turnpike (I-70/I-76)
Open to traffic

Rays Hill Tunnel (Bedford County, Pennsylvania)
Begun ca. 1885 by South Penn. RR; completed 1940 by Penn. Tpk. Comm.; bypassed and abandoned in 1968.
Tunnel on abandoned alignment of Pennsylvania Turnpike
Unofficially open to hikers and bicyclists

Sideling Hill Tunnel (Fulton County, Pennsylvania)
Begun c. 1885 by South Penn. RR; completed 1940 by Penna. Tpk. Comm; bypassed and abandoned 1968
Tunnel on Abandoned alignment of Pennsylvania Turnpike
Unofficially open to hikers and bicyclists

Turnpike Connector Bridge (Burlington County, New Jersey)
Built 1956
Arch-truss bridge on the PA/NJ Turnpike over the Delaware River
Open to traffic

Tuscarora Mountain Tunnel (Huntingdon County, Pennsylvania)
Begun c.1885 by S. Penn. RR; first tube completed 1940 by Penna. Tpk. Comm.; second tube completed 1968.
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic