Wyoming Port of Entry and Weigh Station Operations

Wyoming requires all commercial vehicles to stop at designated Ports of Entry (POE) immediately upon entering the state or whenever a Port of Entry is located on the route of travel. Unlike many states that use the term 'weigh station,' Wyoming operates a Port of Entry system managed by the Wyoming Department of Transportation (WYDOT). These facilities serve as checkpoints for weight enforcement, size limitations, fuel tax compliance, and operating authority verification. Drivers must pull into these stations unless they are using a certified electronic bypass system that receives a green light signal, or if the station is explicitly marked as closed. Operating in Wyoming involves navigating high-elevation corridors like Interstate 80, where wind speeds can exceed 60 miles per hour, frequently leading to high-profile vehicle blow-over risks. To maintain compliance while moving through these 14 strategic locations, carriers use DispatchTool to manage IRP and IFTA documentation, ensuring that all permits are readily accessible for inspection at the Port of Entry. This documentation management helps drivers reduce time spent at the scale house by having digital records organized for WYDOT officers. Create a DispatchTool account to centralize your fleet compliance documents before your next haul through the Cowboy State.

Wyoming Weight Limits and Statutory Regulations

Wyoming Statute 31-18-802 defines the maximum weight limitations for commercial vehicles operating on state highways. The gross vehicle weight (GVW) limit is 80,000 pounds on the Interstate system, provided the vehicle meets the Federal Bridge Formula requirements. For non-interstate highways, Wyoming allows for higher weights under specific permit conditions, sometimes exceeding 117,000 pounds for specialized configurations. Single axle weights are restricted to 20,000 pounds, while tandem axles are limited to 36,000 pounds. WYDOT officers utilize both static scales and Weigh-in-Motion (WIM) technology to identify overweight violations. If a vehicle exceeds these limits without a valid overweight permit, fines are assessed based on the poundage over the limit, often starting at $100 plus court costs.

Port of Entry Locations and Operations

WYDOT operates 14 permanent Port of Entry locations across the state. Major hubs are located in Cheyenne (I-25 and I-80), Evanston (I-80), Sheridan (I-90), and Gillette (I-90). These stations are generally open 24 hours a day, 7 days a week, particularly those located on the Interstate system. Secondary locations on state highways, such as Frannie, Lusk, and Torrington, may operate on variable schedules. Every commercial vehicle, including empty trucks and those with a GVW over 10,000 pounds, must stop at the first available port. Failure to stop at a Port of Entry is a misdemeanor under Wyoming law and can lead to immediate detention and significant fines for the driver and carrier.

PrePass and Drivewyze Bypass Integration

Wyoming participates in electronic bypass programs including PrePass and Drivewyze. At equipped locations, transponders or ELD-integrated software communicate with the Port of Entry sensors as the truck approaches. A green light allows the driver to stay on the mainline, while a red light or no signal requires the driver to pull into the port for weighing and credential checking. Bypass rates in Wyoming vary based on the carrier's Safety Measurement System (SMS) scores managed by the FMCSA. Carriers with high Inspection Selection System (ISS) scores—typically above 75—are significantly more likely to receive a pull-in signal. Utilizing these programs can save an estimated $8.68 in fuel and time per bypass according to industry benchmarks from the American Transportation Research Institute (ATRI).

Permitting and Customs Requirements

If a carrier enters Wyoming without a valid IRP registration or IFTA decal, they must purchase a temporary trip and fuel permit at the Port of Entry. A 96-hour trip permit costs approximately $50, while a temporary fuel permit is $7.50 plus the estimated fuel tax for the miles to be traveled. Wyoming is also a member of the International Registration Plan. For oversized or overweight (OS/OW) loads, permits must be secured through the WYDOT self-service portal or at the port. Maximum width without an escort on most Wyoming highways is 15 feet, and any load exceeding 14 feet 6 inches in height requires a specific route survey and permit to avoid bridge strikes.

Safety Inspections and CVSA Decals

The Wyoming Highway Patrol (WHP) conducts North American Standard Inspections at Port of Entry locations. These can range from Level I (Full) to Level III (Driver-only) inspections. During these checks, troopers verify logbook compliance under FMCSA Part 395 regulations, brake adjustments, and tire tread depth, which must be at least 4/32 of an inch on steer tires. If a vehicle passes a Level I or Level V inspection without any critical violations, it may receive a CVSA decal. This decal generally prevents re-inspection for a period of 90 days, unless a manifest defect is observed. In 2023, the WHP conducted thousands of inspections, with the most common out-of-service violations involving lighting and brake system failures.

Winter Travel and Chain Law Enforcement

Due to extreme winter weather, Wyoming strictly enforces tire chain requirements under Statute 31-5-956. When the 'Chain Law' is in effect, typically notified via dynamic message signs and the 511 travel information system, commercial vehicles must have chains installed on at least the four drive tires. If a driver fails to chain up and subsequently blocks the highway, the fine can exceed $750 plus the cost of towing. Ports of Entry serve as primary communication points for these weather-related restrictions. The WHP may close Interstates entirely to light, high-profile vehicles when wind gusts exceed 40-50 miles per hour, a common occurrence on the stretch between Laramie and Rawlins.

Sources

Wyoming Department of Transportation (WYDOT) (2024) — http://www.dot.state.wy.us/home/trucking_commercial_vehicles/ports_of_entry.html Wyoming State Legislature - Title 31 Motor Vehicles (2024) — https://wyoleg.gov/statutes/titles/title31/title31.htm American Transportation Research Institute (ATRI) (2023) — https://truckingresearch.org/

Frequently asked

Do I have to stop at Wyoming Ports of Entry if I am empty?

Yes, Wyoming law requires all commercial vehicles, regardless of load status, to stop at the Port of Entry if the vehicle has a GVWR of 10,000 pounds or more.

What is the fine for bypassing a Wyoming weigh station?

Failure to stop at a Port of Entry is a misdemeanor. Fines typically range from $200 to $500 for a first offense, but the vehicle may also be grounded until all credentials and weights are verified.

How much does a temporary trip permit cost in Wyoming?

A temporary trip permit for a non-registered commercial vehicle costs $50 and is valid for 96 hours, while a temporary fuel permit costs $7.50 plus applicable fuel taxes.

Can I use PrePass at all Wyoming Ports of Entry?

PrePass is available at most major Interstate locations, including I-80 Evanston and Cheyenne. However, drivers must always look for the electronic signal and follow the specific instructions on the roadside signs.

What is the maximum height allowed in Wyoming without a permit?

The maximum legal height for a vehicle and load in Wyoming is 14 feet 0 inches. Anything exceeding this height requires an Oversize Permit from WYDOT.