If you are talking about getting on Skyline Drive from I64 in Virginia and heading north, there is one tunnel measured at 12' 8" . Our Vegas rolls through easily (one of the reasons I love it). If you have a monster bus, you can get off at Swift Run gap and get back on at Thorton gap. I've seen some larger rigs go through the tunnel driving the middle of the road but I wouldn't recommend it.
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Yoshida
2018 Thor Vegas 24.1
Northern Virginia
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