Utah Port of Entry and Weigh Station Compliance Guide

The Utah Department of Transportation (UDOT) Motor Carrier Division operates nine primary Port of Entry (POE) locations across the state. These facilities are located on major freight corridors including Interstate 15, Interstate 80, and Interstate 70. Unlike many states that use the term weigh station, Utah refers to these facilities as Ports of Entry because they enforce a broad spectrum of regulations including size and weight compliance, fuel tax verification, and safety inspections under the North American Standard. Every commercial vehicle with a Gross Vehicle Weight Rating (GVWR) of 10,001 pounds or more is required to pull into an open Utah port unless they have received a bypass signal from a transponder or mobile application. Utah is a major transit state for east-west and north-south freight, meaning enforcement is consistent and technologically advanced. The state utilizes Weigh-in-Motion (WIM) sensors embedded in the roadway to pre-screen vehicles for weight compliance before they reach the physical scale house. DispatchTool helps carriers navigate these requirements by providing truck-safe routing that accounts for Utah's specific bridge laws and port locations. By using the platform to manage IFTA data and equipment profiles, drivers ensure they have the documentation ready if pulled for a Level I, II, or III inspection. Create a DispatchTool account to centralize your fleet documents and route history for easier roadside compliance.

Utah Weight Limits and Bridge Formula

Utah follows the Federal Bridge Formula B for weight limits on the Interstate System. The legal gross vehicle weight is capped at 80,000 pounds without a permit. Single axles are limited to 20,000 pounds, and tandem axles are limited to 34,000 pounds. However, Utah allows for higher weights on non-interstate highways and for specific configurations under LCV (Long Combination Vehicle) permits. For example, a vehicle may exceed 80,000 pounds if it has sufficient axles and spacing, up to a maximum of 129,000 pounds on designated routes. Carriers must ensure the distance between the first and last axle is compliant to avoid fines that scale based on the degree of overweight, often starting at $0.05 per pound over the limit.

Major Port of Entry Locations

Utah operates several high-volume ports that function 24 hours a day. The St. George Port on I-15 northbound at the Arizona border and the Echo Port on I-80 westbound near the Wyoming border are two of the busiest facilities in the western United States. Other critical locations include the Perry Port on I-15 near Brigham City and the Kanab Port on US-89 at the Arizona border. The Monticello Port on US-191 handles significant traffic moving toward the Four Corners region. Drivers should monitor overhead electronic signs, as Utah frequently uses 'Open' or 'Closed' signals combined with directional arrows to manage traffic flow into these facilities.

Bypass Programs: PrePass and Drivewyze

Utah is a member of the PrePass system and also supports mobile-based bypass through Drivewyze. These programs allow carriers with high safety scores (ISS) to bypass ports if their WIM data indicates they are within legal weight limits. Approximately 75% of Utah's port locations are equipped with the necessary transponder readers or geofencing technology to facilitate these bypasses. Enrollment in these programs can save an estimated $8.68 per bypass in fuel and time according to American Trucking Research Institute (ATRI) metrics. Carriers must maintain a good safety record with the FMCSA, as an ISS score above 75 will typically trigger a mandatory pull-in regardless of bypass enrollment.

Oversize and Overweight Permitting

Vehicles exceeding 8 feet 6 inches in width, 14 feet in height, or 65 feet in length for a single unit/trailer combo generally require a permit from UDOT. The fee for a single-trip oversize permit is typically $30, while overweight permits are calculated based on a combination of weight and distance. For loads exceeding 125,000 pounds, a specialized bridge analysis may be required, which can take up to 10 business days for approval. Utah requires pilot cars for loads exceeding 14 feet wide on interstates and 12 feet wide on two-lane roads. Documentation for these permits must be presented at the first Port of Entry encountered upon entering the state.

Safety Inspections and Enforcement

The Utah Highway Patrol (UHP) and UDOT officers conduct CVSA-standard inspections at all Port of Entry locations. In a typical calendar year, Utah conducts over 30,000 roadside inspections. A Level I inspection covers both the driver's credentials (CDL, Medical Card, HOS logs) and the mechanical fitness of the vehicle (brakes, tires, lighting, frames). Penalties for Out-of-Service (OOS) violations are strict; a driver caught operating while OOS can face fines exceeding $2,500 and a disqualification of their CDL for 90 days for a first offense. Maintaining digital maintenance records helps expedite the inspection process.

Agricultural and Hazardous Materials Requirements

Utah requires all vehicles transporting livestock or agricultural products to stop at Ports of Entry for health certificate verification. Additionally, carriers transporting Hazardous Materials (HazMat) must have the appropriate endorsements and placards clearly visible. The state enforces specific routing for radioactive materials and high-hazard explosives, primarily avoiding the Salt Lake City metropolitan core during peak hours. Failure to adhere to designated HazMat routes can result in misdemeanor charges and fines starting at $1,000 under Utah Code 72-9-503.

Sources

Utah Department of Transportation Motor Carrier Division (2024) — https://www.udot.utah.gov/connect/business/motor-carriers/ Utah State Legislature - Title 72 Chapter 9 (2023) — https://le.utah.gov/xcode/Title72/Chapter9/72-9.html American Trucking Research Institute (ATRI) (2024) — https://truckingresearch.org/

Frequently asked

Do empty trucks have to stop at Utah Ports of Entry?

Yes, all commercial vehicles with a GVWR over 10,000 pounds must stop at open ports in Utah, regardless of whether they are loaded or empty, unless they receive a bypass signal.

What is the fine for bypassing a weigh station in Utah?

Bypassing an open Port of Entry is a Class B misdemeanor in Utah, which can carry a fine of approximately $500 to $1,000 and may result in a mandatory safety inspection.

How much does a Utah Trip Permit cost?

For carriers not registered under IRP or IFTA, a 96-hour temporary trip permit costs $25 and a temporary fuel permit costs $25, totaling $50 for full compliance.

What are the tire chain requirements in Utah?

Utah Code 41-6a-1615 allows the DOT to mandate chains on mountain passes. Commercial vehicles with a GVW of 10,001 lbs or more must carry at least one set of chains between October 1 and April 30.