CLOSURE: Highway 401 lanes fully closed in Mississauga

Express lanes have been closed in both directions on a busy Ontario highway following a roll-over crash in Mississauga on Monday.

The crash happened on Highway 401 at Mavis Road in Mississauga shortly before 5 p.m., the OPP Highway Traffic Safety Division says.

Photos from the scene show a dump truck rolled over onto the barrier of the eastbound express lanes, with gravel fallen into the westbound lanes.

Peel Regional Paramedic Services says no injuries were reported.

All eastbound express lanes have been closed, and two westbound express lanes have also been closed. Police say there is heavy traffic in the area and drivers in the area should proceed with caution, or find alternate routes if possible.

The crash happened on Highway 401 at Mavis Road in Mississauga shortly before 5 p.m., the OPP Highway Traffic Safety Division says. (Photo: INsauga.com)

LANE RESTRICTION: Express lanes blocked on #HWY401 eb between Mavis Rd. and Mississauga Rd. in Mississauga due to a collision involving a transport truck. Heavy traffic in the area. Motorists should use caution while travelling through the area or consider an alternate route.^pia pic.twitter.com/8j0DCsqNSX

— OPP GTA Traffic (@OPP_GTATraffic) May 4, 2026