Middlesex OPP say there were no injuries to the driver of a transport that rolled into the ditch on Highway 402 Thursday morning.
The single vehicle crash happened before 8:30 a.m. in the westbound lanes at Kerwood Road.
Police were advising motorists to expect slow downs as crews worked to remove the vehicle.
OPP and tow trucks were on scene.
The collision scene was cleared at around 10:30 a.m.