ID➜WY

The Route: Idaho to Wyoming

This route guide outlines a common and efficient trucking route from Idaho to Wyoming. The specific starting and ending points within each state will affect the total mileage and travel time, so this guide focuses on general interstate routes and key considerations.

The most common route leverages Interstate 84 (I-84) to Interstate 86 (I-86) to Interstate 15 (I-15) and then onto Interstate 80 (I-80) into Wyoming.

• Starting in Idaho: Most drivers will begin on I-84 heading east. I-84 connects numerous cities in southern Idaho and provides access to the interstate system.

• I-84 to I-86: Follow I-84 east until it merges onto I-86 near Declo, Idaho. This is a relatively short segment.

• I-86 to I-15: I-86 continues east until it meets I-15 near Pocatello, Idaho. From Pocatello, take I-15 north towards Montana.

• I-15 to I-80: Continue on I-15 North to Idaho Falls, ID. At Idaho Falls, take US-20 East to the Wyoming Border. US-20 turns into US-26/US-89 and brings you to I-80 at Hoback, WY.

• Entering Wyoming (I-80): From the US-26/US-89 merge at Hoback, WY, you will merge onto I-80 headed either East or West depending on your final destination in Wyoming. I-80 is a major artery running east-west across the southern portion of Wyoming.

This route prioritizes interstate travel for efficiency and access to services. Always consult a reputable trucking GPS and real-time traffic information for the most up-to-date route conditions.

Compliance & Permits

Navigating interstate trucking requires strict adherence to regulations. Be certain your CDL and medical card are up-to-date and valid.

• Weigh Stations/Ports of Entry: Expect weigh stations at or near state borders. Common locations on this route include the Idaho/Wyoming border. Be prepared to stop and comply with all inspections. Drivers are responsible for knowing the current hours of operation for all weigh stations along their route.

• Wyoming Permits: Wyoming requires permits for certain oversized or overweight loads. Ensure you have the proper permits before entering the state if your load characteristics necessitate them. Contact the Wyoming Department of Transportation (WYDOT) for detailed permit information.

• IFTA/IRP: Maintain accurate records of mileage and fuel purchases for IFTA (International Fuel Tax Agreement) and IRP (International Registration Plan) compliance.

Risks & Hazards

The Idaho to Wyoming route presents several potential hazards, particularly related to weather conditions and terrain.

• Seasonal Weather:

  • Winter (October - April): Snow and ice are significant concerns, especially in the mountainous regions. Expect reduced visibility, slippery roads, and potential road closures due to avalanches or heavy snowfall. Chain laws are often in effect. Drivers must carry chains and be prepared to install them when required.
  • Summer (June - August): While generally milder, summer brings the risk of wildfires, which can create smoke that reduces visibility and can lead to temporary road closures. Thunderstorms, especially in the afternoons, can produce heavy rain and flash flooding.

• High Winds: Wyoming, especially along I-80, is known for its high winds. Be prepared for strong crosswinds that can make it difficult to control your vehicle, particularly if you are hauling a high-profile load. Check weather forecasts regularly for wind advisories.

• Wildlife: Be aware of wildlife, especially deer and elk, that may cross the road, particularly at dawn and dusk. Reduce your speed and remain vigilant.

• Mountainous Terrain: Portions of the route involve mountainous terrain, requiring careful attention to speed and braking. Use lower gears when descending steep grades to avoid overheating your brakes. Regularly check brake function.