One person was trapped inside a tractor trailer after the rig rolled on the Highway 401 on-ramp near Howard Avenue late Thursday afternoon.
Tecumseh fire fighters helped extract the driver and shut down the on-ramp that connects to Highway 3. The ramp and a lane of westbound traffic was closed for several hours, but reopened just after 8:30 p.m.
The truck, which was reported to have rolled shortly before 4 p.m., was not carrying any hazardous materials.
One person was sent to hospital with minor injuries.