Washington D.C. oversize permits information

Oversize Permit's in Washington DC


Permits are valid for 5 days.

Operating time

Travel allowed 24 hours a day “unless extremely overwide or over height,” and between 7:00 a.m. – 9:30 a.m. and 4:00 p.m. – 6:00 p.m. Some moves may be restricted to the hours of 10:00 p.m. – 5:00 a.m. Travel is allowed on weekends and holidays.

Legal dimensions

The vehicle must have the following characteristics:

  • Width: 8’6″
  • Height: 13′ 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 Gross; 21,000 steering/single axle; 34,000 tandems; Tridem– depends on axle spacing

Routine permit limits

  • Width: Determined by route.
  • Height: Determined by route.
  • Length: Determined by route. Length limits do not apply to any pole-trailer loads transporting poles, pipes, or structural materials which cannot be dismembered.
  • Weight: Maximum determined on case by case basis. No axle can exceed 31,000 lbs. Loads 140,000 lbs. and up need special approval.

NOTE – Extreme widths, heights or lengths will require night travel.


  • Width: Over 12′ – 2 escort pilot cars and 1 state police vehicle.
  • Height: Over 13’6” – 2 escort pilot cars with height pole and 1 state police vehicle.
  • Length: 75′ or over – 2 escort pilot cars with 1 state police vehicle.
  • Overhang: Over 10′ rear overhang – 2 escort pilot cars
  • Weight: Over 79,000 lbs. or any axle weight over 31,000 lbs. – 1 escort pilot car; Over 120,000 GVW – 1 state police vehicle.

Security measures

“Wide Load” signs are required on all over width loads. No flag requirements. lights, stop lights, turn signals or hazard lights are obstructed by the load. Warning lights (amber & red) are required for night travel.

Permits form

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