Highway 401's westbound lanes have reopened at Highway 25 in Milton after a crash involving a car and tractor-trailer unit, Ontario Provincial Police say.
The lanes reopened at 7:10 a.m.
An OPP spokeswoman told CP24 that a stalled car was struck by a tractor-trailer, which then jackknifed and blocked two of three westbound lanes, at about 5:45 a.m.
At least one person suffered injuries, although the person's condition wasn't immediately available.
In addition to police, paramedics and firefighters responded to the scene.
