Famed Durham NC bridge will no longer kill as many ACs
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Forum Discussion
13'6" is Fed max height on Mh and standard semis. 12'4" will take our acs and some roof with it. I don't think I have ever seen a Mh that was not 13'6" and does not include radio or other antennas sticking up.
Standard height mandated by NTHSA for bridges and over passes is 14'-16' on interstates and arterial feeds. it is 14' on collector and local plus additional allowance for resurfacing. 15' is what we mostly see. on streets with 14' clearance you will hear your antennas clanging and maybe coming off. 15' is just about universal but don't quote me. The statutes say to establish a minimum of 1' between bridge an overpasses to the highest legal vehicle which is 13'6"
So the figures don't exactly jibe. So 15' is what we mostly see,
on state and local roads sometimes our GPSs doesn't not give a warning, such as two instances in Indiana, Nothing like turning a corner and seeing a low clearance sign with no place to turn around, or approaching, at speed, all of a sudden a sign warning of low clearance. Co-pilot is always on the lookout for low clearance bridges etc, among other things, on state and local roads in the boonies or small towns.
AASHO standard for national defense purposes was established in the sixties at 17' on Interstate overpasses..Imagine the carnage if Interstates only had 14' clearance on overpasses.
Standard height mandated by NTHSA for bridges and over passes is 14'-16' on interstates and arterial feeds. it is 14' on collector and local plus additional allowance for resurfacing. 15' is what we mostly see. on streets with 14' clearance you will hear your antennas clanging and maybe coming off. 15' is just about universal but don't quote me. The statutes say to establish a minimum of 1' between bridge an overpasses to the highest legal vehicle which is 13'6"
So the figures don't exactly jibe. So 15' is what we mostly see,
on state and local roads sometimes our GPSs doesn't not give a warning, such as two instances in Indiana, Nothing like turning a corner and seeing a low clearance sign with no place to turn around, or approaching, at speed, all of a sudden a sign warning of low clearance. Co-pilot is always on the lookout for low clearance bridges etc, among other things, on state and local roads in the boonies or small towns.
AASHO standard for national defense purposes was established in the sixties at 17' on Interstate overpasses..Imagine the carnage if Interstates only had 14' clearance on overpasses.
