Vertical Clearance

Vertical Clearance

Vertical Clearance

Sufficient vertical clearance must exist at ECFs to permit the safe passage of large trucks, heavy equipment transporters, and engineering maintenance equipment. At ECFs accommodating trucks, the vertical clearance should be at least 17.5 feet from the highest point of the roadway cross section. This clearance provides room for future resurfacing and contributes to the overall appearance of the entrance. Although 17.5 feet is recommended, some services allow 17 feet at truck inspection areas and 14.5 feet at ECFs without trucks.

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