What Is the Standard Overpass Height?
Sign Supports and Pedestrian Overpasses Must Be at Least 17 Feet (5.2 M) Above the Road, Except on Urban Routes with Lesser Clearance, Where They Should Be at...
Sign supports and pedestrian overpasses must be at least 17 feet (5.2 m) above the road, except on urban routes with lesser clearance, where they should be at least 1 foot (30 cm) higher than other objects.
What is the clearance under an overpass?
The vertical clearance of an overpass bridge is defined as the minimum height between the pavement and the bottom of the overpass structure and should be at least 16 feet across the entire width of the roadway, including the auxiliary lanes and the width of paved shoulder.
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What is the average height of a bridge?
The federal government recommends that bridges on public roads have a clearance of at least 14 feet. This ensures that trucks shorter than the maximum truck height — 13 feet, 6 inches in most states — can pass underneath them safely.
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