Dangerous Highways

British Columbia Highway 5 — the Coquihalla Highway — has a reputation among commercial drivers that is earned every winter. The 315-kilometre corridor from Hope to Kamloops climbs to 1,244 metres (4,081 feet) at the Coquihalla Summit, receives some of the heaviest snowfall of any highway in Canada, and closes multiple times each winter for avalanche control or storm-related hazards.

It is also the most important freight artery between the Port of Vancouver and the BC Interior. When the Coquihalla shuts down, the supply chain for much of western Canada feels it.

Interstate 20 enters Louisiana from Texas at the Shreveport–Bossier City metro and continues east through the Red River floodplain to Monroe before eventually reaching Mississippi. For truckers who run east-west freight across the South, this corridor is a consistent fixture in conversations about the worst road surfaces in the country — and it earns that reputation not through dramatic mountain hazards or blizzard conditions, but through something more mundane and perhaps more insidious: infrastructure that has simply not kept pace with the demands placed on it.

The Yellowhead Highway (Highway 16) stretches from Portage la Prairie, Manitoba to Prince Rupert, British Columbia — over 3,000 kilometres of Canada’s northern transcontinental corridor. For much of its length, the Yellowhead is a serviceable two-lane highway through boreal forest and prairie. But two sections in the mountain west require specific attention from commercial drivers: the Jasper–Hinton corridor in Alberta, and the McBride–Tête Jaune Cache section in British Columbia.

These stretches are dangerous for overlapping but distinct reasons: extreme wildlife density, remote location, severe winter weather, mountain terrain, and in the case of the BC section, a troubling history of violence against highway users that has given this road a dark nickname.

There are dangerous roads, and then there is Alberta Highway 63.

For decades, the 465-kilometre corridor between Edmonton and Fort McMurray carried a grim distinction: one of the highest per-kilometre fatality rates of any Canadian highway. The road became so notorious that provincial politicians, safety advocates, and the families of accident victims campaigned for years under the banner of “Twinning 63” — arguing that the single-lane highway was a preventable killer.

For commercial truck drivers, no single stretch of US interstate commands more respect — or fear — than the 150 miles of Interstate 70 between Denver and Grand Junction, Colorado. Combining extreme elevation, sustained steep grades, avalanche terrain, mandatory chain laws, and weather that can change from clear to whiteout in minutes, this corridor is responsible for a disproportionate share of serious commercial vehicle accidents in North America.

If you are dispatching or driving freight through Colorado, this guide is essential reading.

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.

The Trans-Canada Highway is the longest national highway in the world, stretching over 7,800 kilometres from Victoria, BC to St. John’s, NL. For most of its length it is a manageable, if sometimes remote, route. But two sections in the western mountains stand apart: Rogers Pass through Glacier National Park in British Columbia, and the Banff–Lake Louise corridor on the BC–Alberta border through Banff National Park. Together, these segments represent some of the most consequential driving in Canadian commercial trucking.

Interstate 40 replaced Route 66 as the primary east-west freight corridor across the American Southwest, and it has inherited all of Route 66’s exposure to one of the most demanding environments a highway can occupy: desert heat, expansive terrain, sparse services, and a climate that destroys road infrastructure faster than maintenance budgets can keep up with it. Between the California border and the Oklahoma state line, I-40 passes through approximately 1,000 miles of some of the roughest pavement on the US interstate system.

Interstate 81 is one of the most heavily used freight corridors in the United States, running 855 miles from Tennessee through Virginia and Pennsylvania before connecting to I-90 in New York. For commercial drivers, this route is deceptively challenging: it looks like a standard Appalachian interstate, but the concentration of trucks, the terrain, and the weather conditions make it one of the most statistically dangerous stretches of highway in the country.

Interstate 26 runs approximately 220 miles from I-40 in Asheville, North Carolina southeast through Spartanburg, Columbia, and the South Carolina Lowcountry to Charleston on the coast. It is a major freight corridor connecting the Southeast’s interior to the Port of Charleston — one of the busiest container ports on the East Coast — and carries substantial commercial vehicle traffic year-round.

Between 2000 and 2010, I-26 in South Carolina recorded 286 accidents that claimed 325 lives — a fatality rate that placed it among the most dangerous interstates in the Southeast. The causes were specific, structural, and in many cases preventable.