Utah Oversize Permit, Wide and Heavy Haul Information

Operation is permitted from one-half hour before sunrise to one-half hour after sunset, including Saturday and Sunday. In addition, loads that exceed 10 feet in width, the legal height, 92 feet in overall length, and 10 feet of overhang can travel 24/7 on all highways, as long as the proper lighting is used.

Loads that exceed 10 feet in width, legal height, and 105 feet in overall length cannot travel from 6:00 a.m. to 9:00 a.m. and from 3:30 p.m. to 6:00 p.m. Monday through Friday in the following areas: Box Elder - all highways that are south of exit 357 of I-15; all highways located in Weber, Davis, and Salt Lake counties; Utah County - all highways north of SR75 - Exit 261 I-15 and SR68 MP 16.

Oversized or over-dimensional loads are prohibited from traveling on all major holidays and holiday weekends, as well as on Pioneer Day, which is July 24th. For the safety of other drivers on the roadways, signs, flags, and lights may be required. Posted signs must be 7 feet by 18 inches, set on a yellow background with 10-inch high black letters in accordance with the Federal Highway Administration Standard Alphabet Series C. Letters must be painted with a one and five-eighths inch stroke; displaying “OVERSIZE LOAD.”

Signs in the front can be fixed to the front bumper or on the top of the vehicle’s cab. Rear signs must be set on the rearmost part of the vehicle or load, and if this is not possible, they should be as far back on the rear of the vehicle cab as possible. The load cannot obstruct the sign. The bottom edge of the sign cannot be less than five feet or more than seven feet above the road. Flags are required on rear overhangs that exceed four feet. Loads with an overhang of 20 feet or more require rotating, flashing, or oscillating amber lights mounted at the end of the overhang sitting at least four feet above the ground. Amber lights need to be at the front and center of the load with red lights at the rear. Marker lights must indicate extreme width.
Permits are valid for five days in the state of Utah and must be obtained prior to arrival into the state. Permits can be obtained at the state line POEs or interior ports, as long as the driver calls ahead for permission. To obtain the permit beforehand, you can visit the Utah Department of Transportation at https://www.udot.utah.gov/connect/business/permits/commercial-trucking-permits/.