Conquering the Coquihalla: Trucking Through Winter in British Columbia
The Coquihalla Highway (Highway 5) in British Columbia, Canada, is a vital lifeline connecting the Lower Mainland to the Interior, cutting through the rugged Cascade Mountains. Known for its stunning scenery in summer, it transforms into one of North America's most challenging drives in winter, especially for truckers hauling heavy loads over steep grades and high elevations.
Reaching a summit at 1,244 meters near the former toll booth, the Coquihalla is prone to sudden weather shifts: heavy snowfall, high winds, blowing snow, fog, and black ice. Storms can dump 20-30 cm of snow in a single day, leading to reduced visibility, compact snow on roads, and frequent closures. Recent winters have seen multi-vehicle incidents involving semis, often triggered by jackknifed trucks during intense snowfalls.
Despite the risks, the highway is a major trucking route. Many commercial drivers navigate it successfully thanks to good maintenance (plows and avalanche control keep it open most of the time) and dedicated truck climbing lanes on steep sections like Snowshed Hill. However, fuel costs on the inclines and unpredictable conditions lead some truckers to prefer alternate routes when possible.
Essential Tips for Winter Trucking on the Coquihalla
Mandatory Winter Tires and Chains: From October 1 to April 30, winter tires (marked with the mountain/snowflake symbol) or chains are required. Carry chains and know how to install them. Conditions can demand them quickly.
Check Conditions First: Always visit DriveBC.ca for real-time updates, webcams, and alerts.
Prepare Yourself: Slow down, increase following distance, and use lower gears on descents. Pack emergency supplies: food, water, warm clothing, and a full fuel tank. Avoid travel during severe storms if possible.
Drive Defensively: Watch for black ice in shaded areas, and respect variable speed limits that drop during poor weather.
The Coquihalla demands respect, but with preparation and caution, truckers keep goods moving safely through BC's winter wonderland or whiteout. Safe travels!