The eastbound lanes of the Highway 401 express lanes are closed in Mississauga after a two-vehicle collision in the area.
The closures are affecting the eastbound lanes from east of Winston Churchill to approaching Mavis.
CityNews traffic spotters say two vehicles were involved in the collision. A tractor trailer jack knifed into the eastbound lanes and broke through the concrete median.
The Ontario Provincial Police says the driver of the eastbound vehicle is a 45-year-old driver from Georgetown who has been charged with careless driving. He is in the hospital with minor injuries.
The Ministry of Transportation Ontario (MTO) expects this to be a lengthy closure.
Collector lanes are still open both ways.