PERMITS
Utah oversize permits are valid for five days. Must have permit prior to entering the state. Permits can also be purchased at state line POEs or at interior ports if driver calls ahead for permission (phone numbers are on Utah provision sheet).
OPERATING TIME
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 (14′), 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′.
RESTRICTED TRAVEL
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.
LEGAL DIMENSIONS
Length: 53′ semi-trailer on designated highways
Overhang: 3′ front (tractor), 6′ rear
Width: 8’6″
Height: 14′
Weight: 80,000 Gross
Single – 20,000
Tandem – 34,000
Tridem – 42,500
ROUTINE PERMIT LIMITS
Length: No set maximum. If the road can handle the length, it will be permitted.
Width: 17′ (Bulldozer blades over 16′ must be removed; can be hauled on the same load)
Height: 17′ 6″
Weight:
Gross Weights
5 axles – 100,000
6 axles – 136,000
7 axles – 148,500
Axle Weights
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.
ESCORTS
On Interstate and freeways:
Length: Over 120′ – 1 escort
Overhang: Over 20′ – 1 escort
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
On other highways:
Length:
Over 105′ – 1 escort
Over 120′ – 2 escorts
Overhang: Over 20′ – 1 escort
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.
Note: Twisting and turning canyon roads with limited sight distance may require escorts, at D.O.T. discretion.
SIGNS, FLAGS & LIGHTS
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′, and on the trailer corners on overheight only loads. “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 that exceeds 92′ in length, whether loaded or empty. Overhang of 20′ or more must have a rotating, flashing, or oscillating amber light mounted at the end of the overhang and at least 4′ above ground level. See the Operating Time section above for lighting during permitted night moves.
