Coquihalla Highway Summer 2026 Travel Alert: Peak Congestion And Active Construction Zones Spark Delay Warnings For Highway 5
Drivers heading through British Columbia’s interior face significant delays this weekend as Ministry of Transportation and Infrastructure officials issue a high-volume travel advisory for the Coquihalla Highway (Highway 5). Starting today, July 24, 2026, peak summer vacation traffic combined with active resurfacing projects and localized speed reductions between Hope and Merritt is projected to add up to 45 minutes to standard travel times. Commuters are urged to plan departure times strategically to avoid peak gridlock.
Segment / Location Delay Type / Project Speed Limit / Status Peak Delay Windows (July 24–26, 2026) Hope to Great Box Canyon Pavement resurfacing & shoulder work Reduced to 80 km/h Friday 2:00 PM - 7:00 PM Larson Hill Bridge maintenance Single-lane alternating (nightly) Saturday 10:00 AM - 3:00 PM Merritt to Kamloops Wildfire prevention brush clearing Standard (watch for roadside crews) Sunday 1:00 PM - 6:00 PM
Critical Corridor Operations and Context
The Coquihalla Highway remains the primary arterial route connecting the Lower Mainland to the Okanagan and the BC Interior. Following the extensive rebuilding phases of the last few years, the corridor has returned to high-speed operations, but seasonal summer maintenance remains critical to preserving asphalt integrity under heavy commercial transport loads.
During this peak period of the 2026 summer tourism season, traffic volumes on Highway 5 typically surge by more than 40 percent compared to spring baselines. With regional temperatures soaring, vehicle breakdowns and overheated engines are also contributing to sudden lane blockages, compounding planned construction delays. Emergency services and highway maintenance crews are stationed at high-elevation points, including the Coquihalla Summit, to quickly clear stalled vehicles and maintain flow.
Driver Utility and Alternative Routes
For motorists traveling over the weekend, real-time preparation is vital. The BC Ministry of Transportation advises all drivers to carry ample drinking water, ensure vehicle cooling systems are fully serviced, and monitor DriveBC before departure.
Alternative routes, such as Highway 1 (Fraser Canyon) or Highway 3 (Crowsnest), are open but are also experiencing higher-than-average volumes due to travelers trying to bypass Highway 5.
Key operational recommendations for drivers include:
Time Travel Wisely: Depart before 9:00 AM or after 7:00 PM to bypass peak congestion windows. Observe Speed Zones: RCMP Integrated Road Safety Units have increased patrols on Highway 5 to strictly enforce the temporary 80 km/h zones. Keep Distance: High-speed tailgating in construction zones remains the primary cause of multi-vehicle shunts on Larson Hill.
Coquihalla Highway closes southbound after second issue in 24 hours
What's Next for Highway 5
Looking ahead into August 2026, construction schedules on Highway 5 are expected to intensify in anticipation of the BC Day long weekend. Commuters should prepare for extended travel restrictions as crews push to complete major resurfacing projects before autumn. Daily updates, active lane closures, and incident reports will continue to be updated in real-time via official provincial transport channels.
Planning a drive on the Coquihalla Highway? Read our Summer 2026 travel advisory on Highway 5 delays, construction zones, and peak traffic times.
