The Michigan Department of Transportation is warning motorists to be aware this week as crews work to fill potholes on area freeways.

“Road crews are continuing to fill potholes with typical cold patch material and are working extended hours to ensure loose concrete is removed and patching material is well compacted,” Diane Cross, MDOT spokeswoman, said in a statement. “Depending on the weather, crews will alternate between patching and snow removal.”

Other efforts are underway to improve the road surface on Interstate 696 and other areas.

Last week, two drivers reported falling concrete striking their cars in two spots along the freeway, hours apart. The first on the westbound side near Interstate 75 in Oakland County and the second in the eastbound lanes near the Schoenherr overpass in Macomb County, Michigan State Police said at the time.