Blue Mountain Tunnel

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Blue Mountain Tunnel
Blue Mountain.jpg
County Franklin
Length 4,339 ft
Opened 1 October 1940
(Opening of the Turnpike)
South Penn Railroad
Number 1
Planned Length 4,240 ft
Heading Completed 3,063 ft


Blue Mountain Tunnel is one of the original tunnels of the Pennsylvania Turnpike.

It is most famous as one of the "Twin Tunnels", celebrated on Turnpike postcards and other souvenirs, paired with Kittatinny Mountain Tunnel, with only about 0.1 mile separating them.