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Lehigh Tunnel

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Tunnel
Location type: Tunnel
Location address: United States, Lehigh
Number of texts: 1
3 stars
Made by wikipedia.org | Reference O | © CC 3.0
Made by wikipedia.org | Reference Wikipedia.org | © CC 3.0

The Lehigh Tunnel is a pair of road tunnels that carries the Pennsylvania Turnpike Northeast Extension (Interstate 476) under Blue Mountain north from Interstate 78 to the Scranton/Wilkes-Barre area between mileposts 70.7 to 71.5. Originally a single tunnel that opened to traffic in 1957, it was called the Lehigh Tunnel to avoid confusion with the existing Blue Mountain Tunnel on the mainline. The tunnel was “twinned” in 1991 to allow two lanes of traffic in each direction. It has an unusual appearance, as the original (northbound) tunnel is rectangular, as it used the older dig-and-blast technique, while the new tube is oval, having been constructed using the New Austrian Tunnelling method.

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