Several height warning lights are currently broken on major highways in the Edmonton region, including a key sensor in Leduc, following reports of malfunctions on March 11, 2026. These “LOAD TOO HIGH” sensors are designed to tell truck drivers if their vehicle is too tall for a bridge or overpass, but they are not currently working as intended.
The issue affects three specific areas, including the northbound Queen Elizabeth II Highway just before the Highway 2A junction in Leduc. Other broken lights are located on northbound Highway 15 about 100 metres past Highway 21 near Fort Saskatchewan, and on eastbound Highway 16 before 50th Street in Wabamun.
According to 511 Alberta, commercial truck drivers and operators of oversized loads should use extra caution when driving through these areas. Drivers should verify their own route clearances and height limits rather than relying on the automated flashing lights until the equipment is repaired.
Alberta Transportation and Economic Corridors manages these safety systems to help prevent bridge strikes, which can cause significant structural damage and traffic delays. These sensors usually trigger a bright visual alert for drivers when a vehicle exceeding a certain height approaches a structure with low clearance.
