Squirrel Hill Tunnel

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The Squirrel Hill Tunnel is an interstate tunnel in Pittsburgh. It serves as an eastern gateway to the city for I-376 and was completed in 1953 after 8 years of construction and at a cost of US$18 million 1953 dollars. At the time of opening it was the single largest investment by the State of Pennsylvania Transportation Department (PennDOT). It is 4,225 feet long and is a twin-bore tunnel with 8 cross passages.

In Pittsburgh driving lore, the tunnels are notorious, most notably for several accidents when tractor-trailers that are too tall to safely travel through the tunnel get stuck against the roof of the tunnel.