Cheyenne → Laramie → Rawlins → Rock Springs → Evanston
The east-west backbone. I-80 crosses 402 miles of Wyoming - the highest-elevation interstate in America between Cheyenne and Laramie, where the Summit sits at 8,640 feet. This is the long lane: Chicago to Salt Lake, Omaha to Reno. Closures from blowing snow are routine November through March, and every Wyoming driver knows the WyoRoad app by heart.