Westbound Hwy. 401 reopened near Guelph after serious collision

Westbound lanes of Highway 401 are closed south of Guelph following a collision involving a commercial vehicle. (@OPP_HSD / X)

The westbound lanes of Highway 401 have reopened south of Guelph following a collision involving a commercial vehicle that left one person seriously injured.

Ontario Provincial Police said one person was extricated from a commercial vehicle that rolled over. They were taken to hospital with potentially life-altering injuries, OPP said.

According to reports from the scene, a tractor trailer rolled into a ditch.

The OPP said members of its Technical Collision Investigation team were at the scene.

Most westbound lanes of Highway 401 that were previously fully closed at Highway 6 for investigation are now open, police said. The ramp from Highway 6 to westbound Highway 401 has also reopened.