Maryland Overweight/Oversize Permits

Maryland Overweight PermitsPermit Types

Obtain Maryland Oversize/Overweight permits calling at (888) 799-8858.

1.Single Trip Permit – Valid for 9 days

  • Special Hauling

2.Multi Trip Permits

  • 30 Day Blanket – GVW: 90.000 lbs, 12′ wide, 14′ high, legal length
  • Annual Blanket – GVW: 90.000 lbs, 12′ wide, 14′ high, legal length
  • 30 Day Blanket Baltimore City – GVW: 90.000 lbs, 12′ wide, 14′ high, 85′ length
  • Annual Blanket Baltimore City – GVW: 90.000 lbs, 12′ wide, 14′ high, 85′ length
  • 30 Day Continuous Travel – Farm Products Only
  • Annual Continuous Travel – Farm Products Only
  • 30 Day Exceptional
  • Annual Exceptional
  • Containerized Cargo
  • Heavy Weight Port Corridor Containerized Cargo

Obtain Maryland oversize permits calling at (888) 799-8858.

OPERATING TIME: Moves for loads up to and including 150k GVW, 13’ wide, 14’6” high, 90’ long may move 24/7. All other loads are one-half hour after sunrise and one-half hour before sunset. No Sunday travel is permitted.

BALTIMORE CITY: Baltimore permits for the predefined route into or out of Dundalk Marine Terminal has now included with the Maryland state permit provided the dimensions are under 120,000 pounds, 12′ wide, 14’6″ high and 85′ long. Loads with other Baltimore destinations or origins, or loads exceeding these dimensions have to be ordered separately from Baltimore City, which is usually slow with a 24-hour (minimum) turn-around time.


  • 8’6″ Interstate & designated highways
Weight: 80,000 lbs – Gross weight

  • Single – 20,000 lbs
  • Tandem – 34,000 lbs
  • Tridem – 42,500 lbs
Height: 13’6″ (over 13’6″ not permitted on flat-bed).
  • 53′ semi-trailer on Interstate and designated highways
  • 48′ trailer all other roads
  • Trailers over 48′ are not to exceed 41′ kingpin to center of rear tandem axles, and not more than 4′ set back from front of trailer to kingpin
  • 65′ Overall for Automobile/Boat Transporter
  • 28′ Double trailers
  • 3′ front
  • 6′ rear


Length: 120′
Height: 16’ (overheight cannot be permitted on a flatbed). Over 14’6″ requires a route survey.
Weight: 120,000 lbs (non-Interstate) to 150,000 lbs (Interstate)

  • Single – 27,000 lbs
  • Tandem – 52,000 lbs
  • Tridem – 63,000 lbs
Width: 16′

Loads exceeding these dimensions are treated as super loads. Over 120,000 pounds gross on any non-Interstate and 150,000 on Interstate routes are Superload.



Over 85′ – 1 rear escort

Over 140’ – 2 escorts (front and rear)


over 14’6″ – 1 escort with high pole and a route survey must
accompany application.


over 13′ – 1 escort (unless the load is a manufactured housing unit)

over 14′ – 2 escorts (rear and front)

over 16′ – 1 police escort


Over 120.000 lbs – 1 escort

Over 150.000 lbs – 1 police escort

Traveling when weather or road conditions justify the requirement of one escort vehicle

Montgomery and Prince George Counties: loads over 12′ wide on 2-lane undivided – 2 escorts


“Wide Load” or “Oversize Load” signs are required if the vehicle and load exceeds 9’ in width, front and rear. The sign must appear in black letters not less than 10” high, with a brush stroke not less than 1 5/8” wide. The letters must appear on a yellow background, 18” high and 7’ wide on the front and rear of vehicle load. You must display red or orange fluorescent flags during daylight hours at least 18” square fastened by at least one corner on a staff placed at the widest extremities instead of flags; two red lights must be displayed on a rear overhang exceeding 4’ indicating the widest part of the overhang and one on each side of the load.


No movements across any toll facilities allowed from noon Friday until 9:00 A.M. Monday. This restriction is also applied to all of I-95 from Baltimore to the Delaware line. Over 12′ wide or over 92,000 pounds can only travel 9:00 A.M. to 3:30 P.M. (and Saturday until Noon) when on the Capital Beltway I-495/I-95 and Baltimore Beltway I-695. If 14′ wide or more, travel is only allowed from 9:00 A.M. to 3:30 P.M. (and Saturday until Noon on any highway. No travel on six major Holidays and Holiday weekends (check with the Permit Office).

Obtain Maryland Oversize/Overweight permits calling at (888) 799-8858.