WA➜WY

The Route: Washington to Wyoming

This route guide outlines a typical commercial trucking route from Washington state to Wyoming, prioritizing Interstate highways for efficiency and safety. Please note that specific origin and destination points within each state will influence mileage and minor route adjustments.

The primary Interstate highways for this trip are I-90 and I-82.

• Starting in Washington: Typically, drivers will begin on I-90 heading east from major cities like Seattle or Spokane.
• Crossing into Idaho: Continue on I-90 through Idaho, passing through Coeur d'Alene and near Missoula, Montana.
• Montana Transition: Remain on I-90, transitioning into Montana. This section is characterized by mountainous terrain and potential weather variations.
• Wyoming Entry: As I-90 enters Wyoming, you'll continue east, leading towards cities like Sheridan and ultimately towards other destinations further south or west within Wyoming via connecting state routes or Interstate spurs like I-25.

Compliance & Permits

Navigating state regulations is crucial for compliance. The following are important considerations for this route:

• Weigh Stations/Ports of Entry: Be prepared for weigh stations at or near state borders. Expect inspection stations entering Idaho and Wyoming. Specific locations depend on current operating hours and can be found using apps or online resources. Check for temporary closures or modified operating hours. Common locations include:

  • Idaho: Eastbound I-90 near Coeur d'Alene.
  • Wyoming: Eastbound I-90 near Sheridan.
• Permits: As you are driving I-90 through Washington, Idaho, Montana, and Wyoming, there are no major specific state permits needed such as a New Mexico Weight Distance Tax (WDT), New York Highway Use Tax (HUT), or Kentucky Usage (KYU) tax. Ensure IFTA and IRP are up to date. Be sure your vehicle meets all federal and state size and weight regulations.

Risks & Hazards

This route presents unique seasonal challenges that require careful planning and awareness:

• Winter Weather: The Rocky Mountains pose a significant risk of heavy snow, ice, and reduced visibility from late fall through early spring (October - April). Chains may be required. Check weather forecasts and road conditions frequently. High mountain passes can be temporarily closed due to severe weather.
• High Winds: Wyoming, in particular, is known for its strong winds, especially during the spring and fall. High profile vehicles are especially vulnerable. Be prepared for potential delays and adjust speed accordingly.
• Wildlife: Be aware of wildlife crossings, particularly at dawn and dusk. Deer and elk are common in this region and can pose a hazard.
• Summer Heat: During summer months, overheating can become a concern, especially for older vehicles. Ensure cooling systems are properly maintained, and plan rest stops accordingly.
• Mountain Driving: Exercise caution when descending steep grades. Use appropriate gear, engine braking, and avoid riding the brakes to prevent brake failure. Be aware of runaway truck ramps.