Westbound Hwy. 401 reopened in Milton after multi-vehicle pile-up

Click to play video: 'Highway 401 closed for hours after 18 vehicle pileup' Highway 401 closed for hours after 18 vehicle pileup
WATCH ABOVE: OPP say winter conditions likely played a roll in a massive pileup near Milton. Luckily there were only minor injuries. Jamie Mauracher has more – Feb 13, 2019

The westbound lanes of Highway 401 in Milton have reopened following a major collision involving at least 20 vehicles Wednesday afternoon.

Ontario Provincial Police said the crash took place just west of Martin Street near Highway 25 and was blocking all lanes.

Sgt. Kerry Schmidt said at least 15 passenger vehicles and seven transport trucks were involved in the collision. Police said no serious injuries were reported.

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READ MORE: ‘Slushy mess’ for Wednesday morning commute in Greater Toronto Area

Police said they were advising motorists caught in the delay to stay inside their vehicles and wait for emergency responders to direct them away from the scene.

WATCH: Response to multi-car pileup

Drivers were also urged not to use the shoulder to pass as it is reserved for emergency vehicles.

READ MORE: ‘I felt like a ragdoll, being thrown around a car’: Victim of Hwy. 401 collision

Police said some major roadways in the Greater Toronto Area are experiencing white-out conditions due to blowing snow.

“With the snow and slush on the roads, I was going through white-out conditions all the way up and the roads are slippery,” Schmidt said.

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