A tractor-trailer jackknifed on Highway 407 in Oshawa Sunday morning, shutting down all eastbound lanes at Simcoe Street around 9 a.m. Emergency crews worked to clear the truck, and the highway fully reopened shortly before 11 a.m., with on-ramps reopening around 11:30.
Police have not reported any injuries or identified the cause of the incident. Drivers were advised to use alternate routes during the closure, which lasted roughly two hours.