Utah OSOW permits

Updated: Sep 2

Permits valid for five days. Must have a permit prior to entering the state. Permits can also be purchased at state line POEs or at interior ports if the driver calls ahead for permission (phone numbers are on the Utah provision sheet).

Utah permitting system: https://app.udot.utah.gov/public/mcs/f?p=155:1:4199149548525::NO:::

Contact phone number: 1-801-965-4892


One-half hour before sunrise to one-half hour after sunset, including Saturday and Sunday, plus the following exception: Loads not exceeding 10' wide, legal height, 92' overall length, and 10' overhang may travel 24/7 on all highways with proper lights (marker lights indicating extreme width, amber lights at the front and center of the load and red lights at the rear), lights and flags on rear overhang exceeding 4'.


Loads exceeding 10' wide, legal height, 105' overall length are prohibited from 6:00 AM to 9:00 AM and 3:30 PM to 6:00 PM Monday through Friday in the following counties: Box Elder – all highways south of exit 357 of I-15 (Perry Interchange); all highways in Weber, Davis, and Salt Lake counties, and in Utah county, all highways north of SR75- Exit 261 I-15 (Ironton) and SR68 MP 16. Holiday travel is not allowed during major holidays and holiday weekends, and on Pioneer Day (July 24th). Check with Permit Office for updated holiday restrictions.


Width: 8'6"

Height: 14'

Length: 53' semi-trailer on designated highways

Overhang: 3' front (tractor), 6' rear

Weight: 80,000 Gross Single – 20,000 Tandem – 34,000 Tridem – 42,500

Divisible Loads Exceeding 80,000:

You can order a permit to exceed 80,000 gross on state highways and Interstate as long as you are legal on all axle/group weights and you are prorated at 80,000 pounds for Utah.


Width: 17' (Bulldozer blades over 16’ must be removed; can be hauled on the same load).

Height: 17' 6"

Length: No set maximum. If the road can handle the length it will be permitted.

Weight: 100,000* (5 axles) 136,750* (6 axles) 148,500* (7 axles) *Depends on axle spacings and configuration. Single – 29,500 Tandem – 50,000 Tridem – 61,750 Loads in excess of these dimensions are reviewed on an individual basis. Over 17’6” in height requires documentary clearance proof from utilities, city, and state signal divisions and municipalities


On Interstate and freeways:

Width: Over 14' – 1 escort; over 16' – 2 escorts.

Height: Over 16' – 2 escorts; over 17’6” – 2 escorts plus Highway Patrol, and notify utilities.

Length: Over 120’ – 1 escort

Overhang: Over 20' – 1 escort

On other highways:

Width: Over 12' – 1 escort; over 14' – 2 escorts; over 16' – 3 escorts, over 17' – reviewed on an individual basis, may require 2 escorts and 2 Highway Patrol.

Height: Over 16' – 2 escorts; over 17’6” – 2 escorts plus Highway Patrol, and notify utilities.

Length: Over 105' – 1 escort; over 120’ – 2 escorts

Overhang: Over 20' – 1 escort

Note: Twisting and turning canyon roads with limited sight distance may require escorts, at D.O.T. discretion.


Flags are required to mark all extremities on any load overhanging the sides and on all vehicles exceeding 10’ in width., on all front overhangs exceeding 3’ or rear overhangs exceeding 4’. "Oversize Load" signs front and rear are required on all vehicles/loads exceeding 10’ in width, or exceeding 14’ in height, and must be displayed to the rear of any vehicle which exceeds 92’ in length, whether loaded or empty. The overhang of 20’ or more must have rotating, flashing or oscillating amber light mounted at end of the overhang and at least 4’ above ground level. See Operating Time section, above, for lighting during permitted night moves.

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