NEW ORLEANS (AP) — A wintry blast dropped up to 4 inches of snow across the northern portion of Louisiana making for hazardous driving conditions.

State police say ice on the bridges and overpasses Thursday continues to cause headaches for drivers.

The National Weather Service in Shreveport says temperatures will reach the upper 30s later in the day and most of the ice should melt.

Commissioner of Administration Kristy Nichols said state government offices will be closed Thursday in Bienville, Caldwell, East Carroll, Jackson, Lincoln, Madison, Morehouse, Ouachita, Richland, Union, West Carroll and Winn parishes.

Also closed Thursday are public schools in Lincoln, Ouachita, West Carroll, Union, Morehouse, Richland and Caldwell parishes as well as Monroe City Schools. The University of Louisiana at Monroe and Grambling State are closed.