Driving through the Squirrel Hill Tunnel in Pittsburgh Pa. The Squirrel Hill Tunnel opened to traffic on June 5, 1953. Since then over (your guess here) vehicles have traveled through the tunnels. The twin bore tunnels are 4,225 feet long. Enjoy the ride.
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![](https://i.ytimg.com/vi/Frhs18W8URE/maxresdefault.jpg)