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There was about 2 total miles of tunnels, so round trip add 4 miles to make it 18 miles on the bicycles. There is no GPS signals in the tunnels :)
The red line is the old turnpike route. Where the red ends in the two places is where the tunnels are.
Chris wife is Jess so that's why these pictures were taken. No Chris did not bring his spray paint along.
Above the tunnel is the exhaust system to get the smell out of the tunnel.
This is where a PennDot truck would be parked inside at the end of the tunnel. Was too wet to walk around inside.