The Ontario Provincial Police continue to investigate after a vehicle on the E. C. Row Expressway left the road and landed on Huron Church Road on Sunday.
Police said it happened at approximately 4:45 p.m.
One person was transported by ambulance to the hospital with non-life-threatening injuries.
The southbound lanes of Huron Church Road reopened at 10:40 p.m.
Investigators hope members of the public will them if they have information or dash-cam footage of the crash. They can be reached at 1-888-310-1122.