Slick roads are blamed for several accidents in North Texas Thursday, including an 18-wheeler that jackknifed on State Highway 183 in Irving. It was dangling off the overpass as crews worked to remove the truck and reopen the road.

The National Weather Service said a tenth of an inch of ice could accumulate on raised surfaces, such as bridges, and some areas could get up to a quarter inch. But the main travel impacts are expected to be from sleet and snow.