2021 Colorado DOT state shipping laws, regulations, and limitations. Heavy-haul and oversize trucking in the state of Colorado.


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Trucking company & pilot car directory.
Locate trucking companies and pilot car companies in the state of Colorado:

Colorado trucking company directory.
Colorado pilot car company directory.

Legal load limits.
Colorado DOT legal load size & weight limitations:

Length: 75’ is the maximum overall length for any vehicle in Colorado.
Width: 8’6” is the maximum width for vehicles traveling in Colorado.
Height :14’6” is the maximum height for vehicles traveling in Colorado without a permit.
Weight: GVW 80,000 lbs on Interstate or 85,000 lbs on other roads.
Overhang:  4’ front and 10’ rear.

Routine trucking permits.
Oversize and overweight trucking permits that are routinely issued by the Colorado DOT:

Length: 130′ on 4 lane highways.
Width: 17′ on most highways.
Height: Depends on proposed routing.
Weight: Your axle spacings between your groups will be what is used to determine your maximum weight limits. Single axle: 22,000 to 27,000 lbs, tandem axles: 42,000 to 50,000 lbs, tridum: 55,000 to 65,000 lbs, quadem: 60,000 to 72,000 lbs. Gross maximum weights: 5 axle: 106,000 to 132,000 lbs if single, tandem tandem. 6 axles 119,000 lbs to 147,000 lbs if single, tandem, tridum. 7 axles 132,000 to 162,000 lbs if single, tridum, tridum. 8 axles: 137,000 to 169,000 lbs if single, tridem, quadem. YOu can go up to 200,000 lbs on a routine permit.
Overhang: Case by case basis.

Pilot Car – Escort Car Requirements

Over 13’2 Lanes1 Front Escort
Over 15’4 Lanes1 Rear Escort

Over 16’1 Front Escort with pole

Over 85’2 Lanes (mountain roads) 1 Front Escort
Over 110’2 Lanes 1 Front Escort
Over 115’4 Lanes 1 Rear Escort

Colorado Travel Restrictions

Travel permitted from sunrise to sunset. Continuous travel permitted if heavy only. For individual road travel restrictions see: https://www.codot.gov/business/permits/truckpermits/restrictions.html

How to Apply for Permits

Colorado Department of Transportation
4001 E Arkansas # 290
Denver, CO 80222

Phone: 800-350-3765 or 303-757-9539
303-757-9719 Fax
A permit is valid for 5 days
The basic fee is $17.00

Credit: Colorado Department of Transportation, Transportation Commission, Rules pertaining to transport permits for the movement of extra-legal vehicles or loads; 2 CCR 601-4

Port of Entry Information

Cortez, Colorado Phone 970-565-9420 Fax 970-565-9420
Dumont, Colorado Phone 303-567-4807 Fax 303-567-9477
Ft. Collins, Colorado Phone 970-482-1622 Fax 970-482-1622
Ft. Garland, Colorado – Closed.
Ft. Morgan, Colorado Phone 970-867-5623 Fax 970-867-5623
Lamar, Colorado Phone 719-336-4712 Fax 719-336-4712
Limon, Colorado Phone 719-775-9758 Fax 719-775-9758
Loma, Colorado Phone 970-858-1068 Fax 970-858-1068
Monument, Colorado Phone 719-481-2281 Fax 719-481-2494
Platteville, Colorado Phone 970-785-2427 Fax 970-785-2427
Trinidad, Colorado Phone 719-846-2408 Fax 719-846-2408

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 Colorado State DOT Permits office before commencing movement.

Additional info


  1. What is required for a motorcycle escort qualification.
    Thank you
    Ron A

    • From my understanding bike escorts are police only. A civilian escort would require a vehicle – being said after years of reading state regulations and updating them.

  2. If you are an oversized load and your tag is covered up is it illegal to have it covered

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