Alabama DOT oversize and over weight trucking permit laws.

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2021 Alabama state DOT oversize and heavy haul trucking shipping laws, rules, regulations and limitations for oversize and heavy haul trucking permits. Pilot car requirements.

Please share your knowledge of Alabama DOT regulations with others below.

Alabama oversize permits, heavy-haul trucking companies and pilot cars.

Locate oversize, heavy-haul trucking companies and pilot cars:

Alabama pilot cars and truck escorts for hire.
Alabama oversize and heavy-haul trucking companies for hire.
Alabama oversize and heavy-haul trucking permits.

Do I need a trucking permit? Legal load limits.

Alabama maximum load limits until a trucking permit is required:

Length: Trailer length maximum allowed is 57 feet (17.37 meters) including combinations.
Width: 8 feet and 6 inches (2.59 meters) wide for most roads, 8 feet (2.43 meters) for roads under 12 feet (3.65 meters) in width.
Height: 13 feet and 6 inches (4.11 meters) tall.
Weight: 80,000 pounds (36287.39 kilograms) gross (GVW).
Overhang: 4 feet (1.21 meters) off of the rear and 5 feet from the front of trailer.

Routine oversize and heavy-haul trucking permits.

These maximum dimensions/weights are considered routine oversize or heavy-haul trucking permits in Alabama:

Length: 150 feet (45.72 meters) maximum length overall.
Width: 16 feet (4.87 meters) if shipment is over 16 feet in width you are not permitted use the interstate system.
Height: 16 feet (4.87 meters) in total height.
Weight: on a single axle; 22,000 pounds (9979 kg), tandem axles: 44,000 pounds (19958 kg), tridum axles: 66,000 pounds (29937 kg), quadem axles: 88,000 pounds (39916 kg), 5 axles: 102,000 pounds (46266 kg), 6 axles: 124,000 pounds (56245 kg), 7 axles: 146,000 pounds (66224 kg), 8 axles: 168,000 pounds (76203 kg).
Overhang: 20 feet (6.09 meters) maximum.
Notes: Alabama state permitting department no longer uses the metric system. On shipments in excess of any of the above dimensions or 180,000 pounds proceed to the super load section below for more information. Loads with weight restrictions are subject to a bridge analysis.

Super load information for Alabama.

Alabama state DOT will classify any shipment in excess of the following as a super load:

Defined as shipments in excess of any of the following dimensions/weights; over 250,000 pounds (113398.0 kilograms) of gross weight, over 16 feet (4.87 meters) in width, over 16 feet in height, over 150 feet (45.72 meters) long. Anything of this nature will require special ALDOT approval. Detailed drawings will be required and need to include shop drawings of the item being shipped, the truck and trailer axle weights and spacings for both truck tractor and trailer. A letter from the manufacturer is required certifying the shipment is reduced to the lowest possible size and weight configuration as well as an explanation of why it can not be shipped by other means such as by barge or port. Loads exceeding 150,000 pounds (68038.8 kilograms)are subject to a full scale structural bridge analysis if bridges are in the route. A special weight authorization (SWA) is required from the permit office to initiate the necessary bridge rating section investigation as well. Night travel (9PM – 6AM) may be required with a state trooper or police escort (minimum of 2 when travelling). A route survey will probably be required. The Alabama State Troopers Association handles all of the scheduling of police/trooper escorts after your super load permit has been issued. A lighting system configured from strobe warning lights must be placed on each extremity of the shipment in addition to basic requirements such as flags and oversize load signs. All rail road crossings must be identified and railroad must be notified in advance of your intent to cross as well as date and time. ALDOT will more than likely verify this with the railroad and not issue a super load permit until verified. It is the carriers responsibility to notify the railroad of each intended crossing. At each rail crossing you will find a small plaque with a phone number and a “crossing number” that identifies each crossing for submitting cross requests. A bucket truck is required to accompany loads that exceed 16 feet and 5 inches (5.0 meters) in height and it is the carriers responsibility to show proof of “utility notification” for shipments in excess of 16 feet and 6 inches (5.02 meters) in height. City or county approval is required for Alabama super loads as well, please see the Alabama list of county engineers for contact details. For information published by the state you can read more Alabama super load information.

Lights, safety flags and warning signs for heavy haul and oversize loads.

Required safety markings, safety flags, warning lights for heavy haul and oversize loads:

A sign will need to be mounted on the front and rear of any over width or over length truck and trailer or combinations. Banners/signs need to be a minimum of 7 feet (2.13 meters) in width, 18 inches (45.7 centimeters) in height and be marked with black letters of no less than 10 inches (25.4 centimeters) in height, with a minimum of a 1-5/8 inch (4.12 centimeters) line thickness on a yellow or orange background. The actual words required are exactly as follows: “OVERSIZE LOAD”. Red flags must be a minimum of 18 inches (45.7 centimeters) square and be placed at all 4 outer most corners of all over-dimensional shipments.

When pilot cars or escort vehicles are required.

Heavy-haul or oversize loads may be required to be accompanies by a escort vehicle or pilot car if:

1 front pilot car (escort vehicle) is required for all loads over 15 feet and 6 inches (4.72 meters) in height with a height pole will be required adjusted 4-6 inches (10.16 – 12.7 centimeters) higher than the actual shipment. On some routes a high pole pilot (escort) may be required for even less heights. Two front and one rear pilot car (escort vehicle) is required for any shipment in excess of 12 feet (3.65 meters) wide. Rear pilot cars (escort vehicles) for mobile home shipments may be replaced with two 5 inch (12.7 centimeters) flashing, stobing or rotating amber lights. 1 rear pilot car (escort) is required for shipments over 85 feet (25.90 meters) in length. 1 front and 1 rear pilot car (escort vehicle) is required for shipments over 105 feet (32.0 meters) in length. 1 rear pilot car (escort) is required if overhang exceeds 10 feet (3.04 meters) from the front of the trailer or 5 feet (1.52 meters) off of the rear of the trailer. There are special escort requirements for bulldozers, scrapers, loaders and other construction equipment being transported with a blade or bucket intact. However on some routes that are 2 lane roads may require 1 front pilot car and on some 4 lane roads 1 rear escort.

Pilot cars/escort vehicle certifications and requirements.

Pilot car or escort vehicle mandatory operator certifications and vehicle requirements:

A pilot car vehicle must be classified as an actual passenger vehicle to qualify, ie; car, truck, van, etc. A pilot car vehicle must be equipped with a strobing, flashing or rotating amber light. The pilot car must be able to communicate with and be in constant contact with all parties working in relation to the shipment by CB or 2-way radio. Also see federal requirements for pilot cars and escort vehicles. Signs mounted on pilot car vehicles must moderately fit the vehicle and not be obtrusive in any manner.

Legal travel times for oversize and heavy haul loads.

Travel times and restrictions for heavy-haul and oversize loads:

One half hour before sunrise to one-half hour after sunset. Travel is allowed all day Saturday with NO SUNDAY TRAVEL PERMITTED. Shipments 120 feet (36.57 meters) to 150 feet (45.72 meters) in length are restricted from moving from 9:00 AM – 3:00 PM Mondays through Fridays. Travel is NO permitted on the following holidays: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. The Alabama DOT state permit office is closed on these holidays as well as on Martin Luther King Day, Washington’s Birthday, Columbus Day, Confederate Memorial Day, Jefferson Davis’ Birthday and on Veteran’s Day. More information on DOT permit office closure is available here. Travel is NOT restricted on these days.

Alabama DOT contact information and notes.

Alabama DOT office and permit contact information:

Alabama Department of Transportation – Oversize Permits
1409 Coliseum Boulevard Montgomery, Alabama 36110

Phone: 334-834-1092 or toll free: 800-499-2782 – option 4.
FAX: 334-832-9084 – if this number has changed please let us know below.
Alabama DOT: Main page of the Alabama state trucking permits website. Alabama laws direct.
E-mail trucking permits:
Current routing detours: Here is the current ALDOT closures memo (if link is down visit main site).
Misc: Alabama DOT trucking Alabama permits manual – has a lot of good information. Escrow account customers may replenish escrow by credit card.  Contact: Mechelle @ 1-800-499-2782 and press option 4. Note: Alabama DOT requires you to sign their permit with red ink only.
DOT permit office Hours: 7:00 AM – 4:45 – PM
Alabama is a member of SASHTO.

List of Alabama cities serviced:

Additional information:

The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Alabama State DOT Permits office before commencing movement.
  1. So you’re saying if I bought a center console boat that was over 8’6” but less then 12’ wide I wouldn’t be able to tow it to the beach on Friday and come home Sunday night? Most center console boats that are 23’ or over are already 9’ beam and to leave them at a wet slip dock is like over $500 a month. That’s crazy. Boats with a beam of no more than 12’ should get an exemption like RVs do.

    • Anything over 8’6″ in width requires a permit. You are only permitted to move during the specified hours on this (Florida) page. Always refer to your permit before moving as travel times may be modified.

  2. Alabama oversize and heavy haul shipping rules and regulations updated May 21, 2018.

  3. What is the wind rile in Alabama please.

    • “Wind Rife” ?

      • Could you please further explain your question please? At the moment we have not heard about any laws that involve measuring “wind” speeds and have assumed this up to the discretion of the driver. We’ll be happy to further research it for you but want to make certain we clearly understand the question. Thank you for your time.

  4. Yes. Anything over 8’6″ is required to be permitted in order to transport.

  5. What are the calculations for oversized loads on steep mountain grade roads for rate of speed and time to stop at a red light placed at bottom of steep grade? What should the length of a yellow light? What type of safety notifications for changing lights are required?

    • Well, firstly pardon the delay as you got caught in a huge amount of posting spam. However once cleared out, there you were Dr. Richards. So, to be direct as possible this is a pretty isolated incident however does occur. So, “oversize” wouldn’t have a huge effect on the capabilities of the vehicle to stop. However, weight would. And this is yet another reason besides creating stress cracks in roads that extra axels are required in most of the world in order to be eligible to ship heavy haul items (in NA over 80,000 lbs GVW). With the extra axels you get that many more brake pads and shoes as well. Any experienced driver which is usually what it takes to set behind the wheel of something so drastically expensive (some over 1 mil overall) would know what speed to take the approach with which would probably be very slow. The brakes combined with the axles are designed to accommodate the maximum weight allowed on the trailer so failure would be an extreme. In certain circumstances either the state would require or the carrier may request a traffic control officer at the light. In the event one was not requested or required the driver would simply call a yellow (and probably even a green) light a red one and come to a complete stop before continuing. Yet another reason newbies drive $100,000 rigs and heavy haul drivers are well seasoned with most over 20-30 years in the industry. It’s a pecking order that is determined by either how much money you have saved (which takes a lot of years) or how much verifiable experience you have as word of mouth probably couldn’t get you in the passenger seat let alone behind the wheel. I hope this helps you.

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