Tags: Road Tunnel.

Sideling Hill Tunnel is one of three original Pennsylvania Turnpike tunnels abandoned (this one in 1968) after two massive realignment projects. The others are nearby Rays Hill Tunnel and further west the Laurel Hill Tunnel. It was less expensive to realign the Turnpike than to bore a second tube for four lane traffic. Sideling Hill Tunnel is 6782 feet (2067 m) long. It was the longest of the original tunnels on Pennsylvania Turnpike.

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