The Ontario Provincial Police (OPP) says all northbound lanes of the Highway 400 are closed from Major Mackenzie to Lloydtown-Aurora Road due to icy conditions and multiple collisions.
The OPP says one person has been taken to a hospital as a “precaution.”
The OPP says they are urging motorists to use caution while driving today and be prepared for unpredictable icy conditions.
In a social media post Sunday morning, the OPP was asking drivers to “stay home and stay off roadways and highways until this weather system passes.”
Not again! More weather is on the way! Large amount of rain/freezing rain expected today, followed by snow and heavy winds. #OPP urging drivers to stay home and to STAY OFF the roadways and highways until this weather system passes. #ONStorm #WROPP ^es pic.twitter.com/bri5MC8F5y
— OPP West Region (@OPP_WR) December 28, 2025