Utah Trucking Regulations

Utah serves as a regional logistics hub for the Mountain West, with Salt Lake City anchoring a growing warehousing and distribution sector that benefits from I-15 and I-80 intersection access. I-15 runs north-south from the Idaho border through Salt Lake City to St. George and on to Nevada, while I-80 cuts east-west across the state and connects to Wyoming and Nevada. The Utah Division of Motor Vehicles handles vehicle registration and IRP, and the Utah State Tax Commission administers IFTA fuel tax. The Utah DOT oversees permitting and enforcement at ports of entry. Mountain terrain creates distinctive operational challenges: chain laws apply on Parley's Canyon (I-80 east of Salt Lake City), Sardine Canyon (US-91), and other passes during winter storm events, and steep grades require careful brake management on descents. Ports of entry on I-15 and I-80 conduct credential and weight checks; carriers should expect mandatory stops at open weigh stations. Utah's energy sector (coal, natural gas, oil) generates significant overweight permit activity in the Uinta Basin and Carbon County areas.

Trucking authority and registration

  • Authority: Utah Division of Motor Vehicles (IRP); Utah State Tax Commission (IFTA)
  • IRP jurisdiction: Yes (https://dmv.utah.gov/cms/irp)
  • IFTA jurisdiction: Yes (https://tax.utah.gov/motor-vehicle/ifta)
  • DOT permit required: No — Interstate carriers with a USDOT number are not required to obtain a separate Utah state number. Intrastate-only carriers must register with the Utah Division of Motor Vehicles.

Weight limits

GVWR80,000 lbs federal interstate standard
Single axle20,000 lbs
Tandem axle34,000 lbs

Utah follows federal Bridge Formula weight limits on Interstate highways. Overweight permits are required for loads exceeding standard limits and are issued by the Utah DOT. Some rural routes and bridge-posted roads carry lower limits.

Notable regulations

  • Chain law requirements apply on I-80 through Parley's Canyon and other designated mountain passes when conditions warrant; carriers must carry chains or appropriate traction devices from October 1 through April 30 on these routes.
  • Utah ports of entry on I-15 (near Nephi, Cedar City) and I-80 (near Wendover, Echo) conduct weight and credential checks; all CMVs must stop at open scales.
  • The Utah DOT issues oversize/overweight permits through its online UPOINT portal; single-trip and annual permits are available depending on load type.
  • Energy freight in the Uinta Basin (US-40 corridor) often requires overweight permits; Utah has specific permit categories for energy development loads.
  • Utah participates in the western states LCV program; Rocky Mountain Doubles up to 129,000 lbs are permitted on designated routes including I-15 and I-80.
  • Brake adjustment and descending grade requirements are strictly enforced on mountain passes; runaway truck ramps are present on major grades.

State trucking association: Utah Trucking Association

Frequently asked questions

When do chain laws apply in Utah and which routes are affected?

Chain laws apply on designated mountain passes — including Parley's Canyon (I-80 east of Salt Lake City) and Sardine Canyon (US-91) — when the Utah DOT activates them during storm events. Carriers are required to carry chains or adequate traction devices from October 1 through April 30 on these routes. Check UDOT's 511 system for real-time conditions.

Does Utah allow longer combination vehicles (LCVs)?

Yes. Utah participates in the western states LCV program and permits Rocky Mountain Doubles up to 129,000 lbs on designated Interstate corridors, including I-15 and I-80. Operators must obtain an oversize/overweight permit from the Utah DOT for loads exceeding 80,000 lbs GVWR.

How do I obtain an oversize or overweight permit in Utah?

The Utah DOT issues oversize/overweight permits through its online UPOINT portal. Single-trip and annual permits are available. Energy sector loads in the Uinta Basin have dedicated permit categories. Some loads require a route survey or engineering review, particularly on bridge-sensitive routes.

Where are Utah's ports of entry located?

Utah operates ports of entry on I-15 near Nephi and Cedar City, on I-80 near Wendover and Echo, and on US-191 near Duchesne. All commercial motor vehicles must stop at open ports of entry for credential and weight verification. PrePass participation is accepted at equipped locations.

Sources

Verified 2026-05-26.