Department of Transportation
UDOT
Utah • United States of America
The Utah Department of Transportation (UDOT) manages approximately 6,000 miles of state highways through a state experiencing significant growth and serving as a major West Coast–Midwest freight corridor. Key freight routes include I-15, I-70, I-80, and US-6. Utah's position as a logistics crossroads between California ports and interior markets has made Salt Lake City a growing distribution hub. UDOT administers commercial vehicle permits, manages Cottonwood Canyons access for freight during severe weather, and provides the UDOT Traffic app and 511UT for real-time road conditions. The department enforces axle weight limits and manages critical weigh stations along I-80 and I-15.
| Official Website | https://udot.utah.gov/ |
|---|---|
| Data API | http://udottraffic.utah.gov/ |
| Founded | 1909 |
| Headquarters | Salt Lake City |
Available Data
Social Media
- @UDOTTRAFFIC — UDOT Traffic
Utah Trucking Regulations
Size & weight limits, OS/OW permits, and seasonal restrictions for commercial vehicles
Weight Limits
| Category | Limit |
|---|---|
| Max Gross Vehicle Weight | 80000 lbs |
| Single Axle | 20000 lbs |
| Tandem Axle | 34000 lbs |
Dimensional Limits
| Category | Limit |
|---|---|
| Max Height | 14 ft |
| Max Width | 8.5 ft |
| Max Length (Single Unit) | 40 ft |
| Max Length (Combination) | 65 ft |
OS/OW Permits
Weigh Station Bypass
36¢/gal
Member
Special Exemptions
Notable Rules
Utah allows longer combination vehicles (LCVs) on designated state routes — one of the few western states that permits this. Salt Lake City is a major Western freight hub at the intersection of I-15 and I-80. Mountain passes on I-80 (Parleys Canyon) and I-15 (near Beaver) can require chains in winter. Mining (copper, coal) generates heavy haul on rural routes. No spring weight restrictions due to dry climate.
Sources
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