The following information about Maine Oversize Permit is for informational purposes only. It’s important to always read your permits and provisions sheets carefully as we cannot guarantee the accuracy of the information provided. If you have any questions or need assistance, you can contact the following number.

Maine DOT #: 207-624-9000 ext 52134

Maine Oversize Permit Duration

Maine oversize permit is valid for a duration of seven days, and it is essential to obtain the permit before entering the state.

Operating Time

In Maine Oversize Permits, oversize loads are allowed to travel from one-half hour before sunrise to one-half hour after sunset, seven days a week. However, there is an exception: no travel is permitted on weekends in the months of July and August.

Restricted Travel in Maine

In Lewiston and Augusta, travel is restricted during inclement weather and rush hour periods from 7:00 am to 9:00 am and 4:00 pm to 6:00 pm. A local permit is necessary to travel through Augusta. No travel is permitted on major holidays or some holiday weekends.

For Maine Turnpike, loads are limited to 13 feet 6 inches in height and 14 feet 6 inches in width. Daylight travel is allowed only from Monday through Friday until noon. Oversize loads are not allowed to travel on the Turnpike on Friday afternoons, Saturday, or Sunday. The toll/permit is $10 for over width or over 70 feet long, paid at the gate. The Turnpike part of the route is included on the Maine oversize/overweight permit, but the $10 fee is paid by the driver at the gate. The Maine Turnpike telephone is (207) 871-7771.

Call (832) 454-5883 For Permit Consultation

Legal Dimensions for Maine Oversize Permit


On Interstate and designated highways, a 53-foot semi-trailer with a 74-foot overall length is permitted. On other highways, a 48-foot trailer with a 69-foot overall length is allowed. It’s important to note that the maximum legal length for vehicles and loads traveling more than 1 mile beyond the National Network is 74 feet.


74′ overall length maximum




The legal loaded height in Maine is 13 feet 6 inches, and the load may exceed this height by 6 inches, making the maximum permissible loaded height 14 feet. However, this allowance is conditional; the load must not be reducible, and it should not be traveling on the Maine Oversize Permit Turnpike.


80,000 Gross

  • Single – 20,000
  • Tandem – 34,000
  • Tridem – 42,000

Routine Permit Limits in Maine








  • Single – 20,000
  • Tandem – 52,000
  • Tridem – 75,000
  • Quad – 100,000

To permit for overweight loads up to 90,000 pounds, the tractor must be registered for a minimum of 90,000 pounds. If you wish to permit loads over 90,000 pounds, the tractor must be registered for the maximum weight of 100,000 pounds.

Loads exceeding these dimensions are treated as superloads.

Maine Oversize Permit image

Escort Requirements for Maine  Oversize Load Permit



  • Over 12′ (or over 11′-11″ on two-lane highway) – one escort
  • Over 16′ – police escort may be required.


A pilot car or police escort may be required for loads with “extreme” heights. The specific criteria for what constitutes “extreme” heights would typically be defined by the relevant transportation authorities or permitting agencies.


Construction equipment, such as a blade or bucket, is allowed to be attached during transport. However, if the blade or bucket is removed, it must be transported on a separate trailer.

Signs, Flags & Lights for Maine Oversize Load Permits

For all over-width and over-length permit loads, “Oversize Load” signs and flags are mandatory. Signs should be mounted at the front bumper and at the rear of the load. Flags (18″ x 18″) should be positioned at the corners of the load and at its widest extremities. If the rear overhang is over 4 feet, it must be flagged, with two flags required if the overhang is more than 2 feet wide. When in motion, headlights should be on low beam (not required if overweight only), and a flashing, rotating amber light or light bar should be on top of the cab.

For all over-dimension moves, headlights on low beam and flashing, rotary, or amber lights on top of the cab are required. Movement when not oversized necessitates the removal or covering of load signs and the extinguishing of amber beacon lights.