A driver is in life-threatening condition after a single-vehicle crash on Highway 403 in Mississauga.

Ontario Provincial Police responded to the collision on the westbound lanes near Hurontario Street shortly before 2 p.m. Monday. The driver, who was alone in the vehicle, was taken to hospital with critical injuries.

The westbound lanes at Hurontario Street were initially closed for several hours but reopened shortly after 5:15 p.m. Police remain at the scene as the investigation continues, and the cause of the crash has not yet been determined.