The Ontario Provincial Police says all the lanes heading north of Hwy. 400 are closed south of Barrie after a wheel fell off an SUV and flew into a vehicle that was traveling in the opposite direction seriously injuring the driver.
Police said they received a call shortly after 11:30 am, for reports of a collision in the area of Hwy. 400 and Hwy. 89.
A police spokesman said the agents determined that a wheel fell from a white SUV traveling south on Hwy. 400 and flew in a vehicle traveling north.
The northbound vehicle driver, a man in his mid-20s, was trapped and had to be pulled out of the vehicle.
Emergency crews said he was then flown to the Sunnybrook hospital in Toronto with head injuries and internal injuries.
A female passenger who was also in the car was taken to a local hospital with minor injuries.
All southbound lanes were also closed during the accident scene, when an Ornge Air ambulance landed on the highway, but have since reopened.
Nothing is said when the lanes are re-opened to the north.
Traffic is supported in the area as many people travel on Hwy. 400 for the weekend in May.
Photos posted on social media show people standing on the highway with completely stopped traffic.
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