Forum Discussion
fpresto
Aug 20, 2013Explorer
I am curious about your statement that the minimum clearance required by the state is 14ft as I know of many state roads that have less. Now if it is a Federal Highway then the requirement is Vertical clearance: Minimum vertical clearance under overhead structures (including over the paved shoulders) of 16 feet (4.88 m) in rural areas and 14 feet (4.27 m) in urban areas, with allowance for extra layers of pavement. Through urban areas at least one routing should have 16-foot (4.88 m) clearances. But I have seen nothing similar for state roads including PA.
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