I am spending the summer in Fitchburg Massachusetts and was wondering about low clearance areas on route 31. there are two railroad overpasses that say they are 13 feet 8 inches and 13 feet high. I just bought an RV specific navigation system from Rand McNally and it does not show these areas on their GPS. I have a fifth wheel that is 13feet 4 inches high and so I set the warning on the GPS at 14 feet and no alarm sounded. Any one have information on these underpasses.
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