This has been discussed several times, with several posts with links to the height of the various tunnels, a search of this site should get you the information you need. As I recall there were a couple of tunnels in the North that are lower and may be a problem. Remember you do NOT want to go down the middle of the tunnel, there maybe someone coming the opposite direction....
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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