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The PTC considered bypassing the Lehigh Tunnel on the Northeast Extension before ultimately deciding on twinning the tunnel. Cost for the bypass and unnecessary added mileage to the highway were deciding factors. [11] The PTC has been considering bypassing the deteriorating Allegheny Mountain Tunnel to alleviate traffic congestion. [12]
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.
The turnpike commission announced plans to build a second bore at the Allegheny Mountain Tunnel and a four-lane bypass of the Laurel Hill Tunnel in 1960. The Laurel Hill bypass was planned because construction would be quicker (and traffic relieved cheaper) than boring another tunnel. [243] In June 1962, the commission approved the projects. [244]
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Pa. Turnpike: How to get E-ZPass, use the new app and save money - even on toll-by-plate. Traffic alert:5-week detour of East Market Street starts soon. What you need to know ... Tunnel & Turnpike ...
The turnpike's original route was opened in October 1940, using six of the railroad's nine tunnels (subsequent route re-alignments have caused some of these tunnels to be abandoned), while the original Allegheny Mountain Tunnel wasn't used due to structural concerns and the Quemahoning Tunnel and Negro Mountain Tunnel were bypassed because ...
The southernmost 13.7 miles (22.0 km) of the route is a controlled-access toll road named the Amos K. Hutchinson Bypass and is signed as PA Turnpike 66, a part of the Pennsylvania Turnpike System serving as a bypass of Greensburg. The Bypass runs between US 119 and US 22.
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