Motorists driving on Highway 407 didn't have turkey on the brain this Thanksgiving Monday -- they were too busy thinking about how to avoid the cows that wandered onto the road.

Multiple lanes of the highway had to be closed just after 12:30 p.m. for about an hour after more than a dozen cows broke through a fence and sauntered onto the highway near the Britannia Road exit.

Ontario Provincial Police had to block the eastbound and westbound lanes of Highway 407 and the eastbound lanes of Highway 403. All on and off ramps at Britannia Road are closed.

Sgt. Dave Sparrock was one of the first officers on the scene. He quickly devised a plan to lead the cows under the bridge and back onto the farm before sealing up the broken fence.

The cattle were eventually corralled without incident.

Tony Martins, a local farmer who owns the cows, says he blames dirt bikers and ATV riders for the mishap.

"This isn't the first time it's happened," he told CTV Toronto. "They cut the fences so that they can go through with the motorcycles. They left the gate open on Britannia Road."

Martins said each cow is worth about $2,000.

With a report from CTV Toronto's Paul Bliss