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Washington D.C. Oversize/Overweight Permits
Permits: Washington, D.C. permits are valid for 5 days.
Operating time: Washington, D.C., allows travel 24 hours a day “unless extremely overwide or overheight,” and between 7:00 a.m. and 9:30 a.m. and 4:00 p.m. and 6:00 p.m. Some moves may be restricted to the hours of 10:00 p.m. to 5:00 a.m. Travel is allowed on weekends and holidays.
Legal dimensions
| Height: | 13’6″ |
| Width: | 8’6″ |
| Length: | 48’ semi-trailer, no overall limit on designated routes; 55’ overall on non-designated routes. |
| Overhang: | 3’ front and 6’ rear. |
| Weight: | 80,000 lbs. gross; 21,000 lbs. on steering/single axles; 34,000 lbs. on tandem axles; Tridem axle limits depend on axle spacing |
Permit Limits
| Width: | Determined by route. |
| Height: | Determined by route. |
| Weight: | Maximum determined on a case by case basis. No single axle can exceed 31,000 lbs. Loads 140,000 lbs. and heavier need special approval. |
| Length: | Determined by route. Length limits do not apply to any pole-trailer loads transporting poles, pipes, or structural materials which cannot be dismembered. |
NOTE: Extreme widths, heights or lengths will necessitate night travel.
Requirements for Escort Vehicles
Width: Over 12’ – 2 escort pilot cars and 1 state police vehicle.
Height: Over 13’6” – 2 escort pilot cars with a high pole and 1 state police vehicle.
Length: 75’ or over – 2 escort pilot cars with 1 state police vehicle.
Weight: Over 79,000 lbs. or any single axle bearing more than 31,000 lbs. – 1 escort pilot car. If over 120,000 lbs. GVW, 1 state police vehicle is also required.
Overhang: Over 10’ rear overhang – 2 escort pilot cars
Signs and Flags
“Wide Load” signs are required on all overwidth loads. Washington, D.C. has no flag requirements. Lights, stop lights, turn signals or hazard lights cannot be obstructed by the load. Warning lights (amber & red) are required for night travel.
You can also obtain any trip and fuel permits you may need with our sister site!