Credit: Courtesy of the Pennsylvania Turnpike Commission
When completed in 1940, the Pennsylvania Turnpike was one of the finest highways in the world, and included almost 7 miles of tunnels.
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A 1940s style automobile parked next to a road, outside a tunnel. Over the tunnel entrance is a sign that reads "Allegheny Mountain
Credit: Courtesy of the Pennsylvania Turnpike Commission
When completed in 1940, the Pennsylvania Turnpike was one of the finest highways in the world, and included almost 7 miles of tunnels.
