Wyoming

Interstate 80 is the northern transcontinental freight corridor — 2,899 miles of rolling plains, high desert, mountain passes, and urban sprawl from San Francisco to the New York metro. Most of it is manageable. Two segments are not.

Donner Pass in California’s Sierra Nevada and Sherman Hill near Laramie, Wyoming are separated by nearly 500 miles of Nevada and Utah desert, but they share a common identity: they are the most dangerous truck segments on I-80, and among the most dangerous on any US interstate.

At 3,020 miles, Interstate 90 is the longest US interstate highway — running from the waterfront of Seattle to the streets of Boston. Most of its length is manageable freight territory. But three segments make I-90 a serious winter corridor for commercial drivers: the Cascade passes of Washington State, the open range of Montana, and the Buffalo–Albany snow belt of upstate New York.

Understanding these segments, and knowing how to navigate them, is essential for any driver or dispatcher running the northern transcontinental freight lane.