U.S. Route 93

U.S. Route 93 (US 93) is a major north–south U.S. Highway that traverses the American West, connecting desert valleys, high mountain passes, and remote wilderness. Spanning over 1,300 miles, the route begins at the U.S.–Mexico border in Wickenburg, Arizona, and runs northward to the Canadian border near Eureka, Montana. Along the way, it serves as a key corridor through Arizona, Nevada, Idaho, and Montana, linking important cities like Kingman, Las Vegas, Twin Falls, Missoula, and Kalispell.

In Arizona, US 93 is best known for its role in the “Future Interstate 11” corridor, acting as a critical connection between Phoenix and Las Vegas. This stretch includes scenic desert landscapes and a crossing over the Mike O’Callaghan–Pat Tillman Memorial Bridge at Hoover Dam. In Nevada, it merges with I-515 through Henderson and Las Vegas before continuing north through remote and scenic basins toward Ely. The segment between Las Vegas and Ely is part of the historic “Great Basin Highway.”

Crossing into Idaho, US 93 descends into the Snake River Plain, passing through Twin Falls and providing access to Shoshone Falls and Craters of the Moon National Monument. In Montana, it threads its way through the Bitterroot Valley and along Flathead Lake, the largest natural freshwater lake west of the Mississippi. The northern terminus lies at the Roosville Border Crossing, where it becomes British Columbia Highway 93.