Toronto’s afternoon rush hour got off to a dramatic start Monday, when a tractor-trailer tumbled off a ramp and crashed onto the busy Hwy. 401.

The tractor-trailer was travelling southbound on Hwy. 404 just after 3:30 p.m. when it lost control, and fell off a ramp and onto the 401.

The rig hit two other vehicles. No one was seriously hurt, but the truck driver was taken to nearby North York General Hospital with minor injuries.

Extended: Truck rollover on Highway 401

Police shut down all westbound express lanes of the 401, as crews, using four heavy-duty tows, worked to remove the twisted rig from the roadway.

Shortly after the crash, crews were able to open the shoulder lane intermittently to ease the back-up of traffic. OPP reopened all the lanes just after 9 p.m.

Police are investigating the cause of the crash.

Tractor trailer crash photos

Aftermath of the truck crash

Aftermath of the truck crash

Aftermath of the truck crash

Photos of the aftermath of the crash provided to CTV News by Sarita MacIntyre