Pennsylvania Turnpike Commission

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Allegheny Mountain Tunnel (Somerset County, Pennsylvania)
Built 1940
Tunnel on Pennsylvania Turnpike/I-70/I-76
Open to traffic

Blue Mountain Tunnel (Franklin County, Pennsylvania)
Built 1940
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic

Kittatinny Mountain Tunnel (Franklin County, Pennsylvania)
Built 1940
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic

Laurel Hill Tunnel (Westmoreland County, Pennsylvania)
Built 1940
Tunnel on Abandoned alignment of Pennsylvania Turnpike
Currently used to test racecar aerodynamics by Chip Ganassi Racing. Closed to the public.

Rays Hill Tunnel (Bedford County, Pennsylvania)
Built 1940
Tunnel on abandoned alignment of Pennsylvania Turnpike
Unofficially open to hikers and bicyclists

Sideling Hill Tunnel (Fulton County, Pennsylvania)
Built 1940
Tunnel on Abandoned alignment of Pennsylvania Turnpike
Unofficially open to hikers and bicyclists

Tuscarora Mountain Tunnel (Huntingdon County, Pennsylvania)
Built 1940
Tunnel on Pennsylvania Turnpike/I-76
Open to traffic