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District of Columbia Oversize Permits

District of Columbia

District of Columbia Dept. of Highway and Traffic Representative

Address: 941 North Capitol, Ste. 2300, Washington, D.C. 20001

Contact: (202) 442 – 4670

Hours: 9:00 A.M. – 3:00 P.M. (ET)


A single trip permit is valid for one (1) trip only, usually five (5) consecutive days.


Single31,000 per axle
Tandem31,000 per axle
Tridum31,000 per axle
Quad31,000 per axle


Gross weight: The maximum weight allowed will be considered on a case by case basis. The maximum gross weight allowed depends on where the vehicle will be traveling. No one axle can exceed 31,000 lbs.

Length: The maximum length is determined by the routes traveled. Extreme lengths will require night travel.

Width: The maximum width is determined by the routes traveled. Vehicles will be allowed to travel if the street can handle the width. Extreme widths will require night travel.

Height: The maximum height is determined by overhead clearance. Extreme height will require night travel.

When Escorts are Needed:

On All Highways:

Width over 12’1 Front
Height over 13’6”1 Front
Length 80’ or more1 Front
Any axle weight over 31,000 lbs1
Weight over 79,000 lbs1 Front


Vectra Heavy Haulers, a top-rated trucking company, is here to offer fast and reliable trucking service in New York also. We follow all the federal, state and local permit operations. For more District of Columbia Oversize/Overweight Permit (OSOW) office regulation information.