CO➜ID

The Route: Colorado to Idaho

This route guide outlines a common and efficient trucking route from Colorado to Idaho, utilizing major Interstate highways. The suggested route prioritizes minimal mileage and accessibility for commercial vehicles.

• Starting Point: Varies based on origin in Colorado. For this guide, we'll assume a starting point near Denver, CO.
• Initial Leg: From Denver, take I-70 West. I-70 is a major east-west artery and the primary interstate connecting Denver with the mountains.
• Through Colorado: Continue on I-70 West through the heart of the Colorado Rockies. Be prepared for significant elevation changes, winding roads, and variable speed limits.
• Utah Transition: I-70 West leads directly into Utah. Continue west on I-70 until you reach its intersection with I-15 North.
• Utah Northbound: Take I-15 North.
• Idaho Entry: I-15 North crosses the border into Idaho. Your final destination within Idaho will determine your exit point from I-15. Common destinations include Idaho Falls, Pocatello, and Boise, which are all accessible directly from I-15 or connecting state highways.

Compliance & Permits

Traveling from Colorado to Idaho primarily involves interstate travel, making compliance with Federal Motor Carrier Safety Regulations (FMCSRs) paramount. Be sure to keep your ELD in proper working order, and maintain up-to-date logs.

• Weigh Stations & Ports of Entry: Be prepared for weigh stations and potential port of entry inspections along I-70 in Colorado and I-15 in Utah and Idaho. Specific locations to be aware of include:

  • Colorado: Always check for temporary closures, but be prepared for weigh stations on I-70 westbound.
  • Utah: Look for weigh stations along I-15 northbound.
  • Idaho: Be ready for weigh stations as you cross the state line from Utah into Idaho on I-15 northbound.

• Permits: Generally, no specific state permits (like NM WDT, NY HUT, or KYU) are required for simply transiting Colorado, Utah, and Idaho. Standard registration and IFTA requirements are applicable. However, if your vehicle or load is considered oversized or overweight, you will require specific permits from each state you transit. Check each state's Department of Transportation website for specific requirements and regulations before beginning your trip.

Risks & Hazards

This route presents several potential hazards, especially during certain times of the year.

• Winter Weather: The Colorado Rockies are notorious for heavy snowfall, icy conditions, and avalanche risks from late fall through early spring. I-70 can be closed for extended periods due to these conditions. Check road conditions and weather forecasts before you depart and be prepared for chain requirements. Idaho can also experience significant winter weather, especially in the eastern and northern parts of the state.
• High Winds: Portions of I-70 in Colorado and I-15 in Utah and Idaho are susceptible to high winds, especially in open areas. These winds can make it difficult to control a commercial vehicle, particularly when empty or carrying a light load.
• Summer Heat: During the summer months, temperatures in Utah and parts of Idaho can be extremely high. This can lead to tire blowouts, engine overheating, and driver fatigue. Ensure your vehicle is properly maintained and that you take frequent breaks to stay hydrated.
• Wildlife: Be aware of wildlife crossings, especially at dawn and dusk. Deer, elk, and other animals can pose a significant hazard on rural stretches of I-70 and I-15.