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Pennsylvania Railroad, Bow Ridge Tunnel: 1907 1987 Former Pennsylvania Railroad: Bow Ridge Derry Township: Westmoreland: PA-357: Sand Patch Tunnel: 1912 1992 CSX Transportation: Negro Mountain: Larimer Township: Somerset
Turn Hole Tunnel, Jim Thorpe, Central Railroad of New Jersey (at the Glen Onoko access, abandoned but popular with Lehigh Gorge State Park guests) [41] [42] Closed to all access by the Pennsylvania Department of Conservation and Natural Resources, the owners of the tunnel, in 2023 because of rocks falling from the ceiling.
The Allegheny Mountain Tunnel is a vehicular tunnel carrying the Pennsylvania Turnpike through the Allegheny Mountains. At this point, the Turnpike carries Interstates 70 and 76. When the tunnel was built, it was considered an "engineering marvel." [1] The tunnel was built in 1939 and is used by 11 million vehicles annually today.
When the Pennsylvania Turnpike opened in 1940, it was known as the "Tunnel Highway" because it traversed seven tunnels: from east to west, Blue Mountain, Kittatinny Mountain, Tuscarora Mountain, Sideling Hill, Rays Hill, Allegheny Mountain, and Laurel Hill. There was one tunnel through each mountain, and the highway was reduced to a single lane ...
Construction was authorized February 8, 1827, [6] and the tunnel was completed November 10, 1829. [1] The canal crossed the Allegheny River on a covered bridge aqueduct, later replaced by John A. Roebling's first suspension bridge, the Allegheny Aqueduct., [7] the canal traveled underground through most of downtown Pittsburgh, under Grant's Hill, to end in a lock leading to the Monongahela River.
The Pennsylvania Turnpike Commission started construction on a new toll highway from Carlisle, Pennsylvania to Irwin, Pennsylvania in 1938. When the Pennsylvania Turnpike opened on October 25, 1940, the Sideling Hill Tunnel was one of the seven original tunnels along the highway, six of which were built from the old railroad tunnels from the 1880s.
The Gallitzin Tunnels in Gallitzin, Pennsylvania, are a set of three adjacent tunnels through the Allegheny Mountains in western Pennsylvania. They were completed in 1854, 1855, and 1902 by the Pennsylvania Railroad as part of the cross-state route that includes the nearby Horseshoe Curve to the east.
The Liberty Tunnels (also known as the Liberty Tubes) are a pair of tunnels located in Pittsburgh, Pennsylvania, United States that allow motorists to travel between the South Hills of Pittsburgh and the city, beneath Mt. Washington. The tunnels were vital in the expansion of the South Hills suburbs by providing a direct route to the city ...