The Virginia Department of Transportation says a mix of snow, sleet and freezing rain is creating slick roads in part of western Virginia. Officials said early Friday that snow plow operators have been responding overnight in affected counties in the department’s Salem district. Crews are currently focusing efforts on primary roads. The 12-county district includes the counties of Bedford, Botetourt, Carroll, Craig, Franklin, Floyd, Giles, Henry, Montgomery, Patrick, Pulaski and Roanoke. VDOT is encouraging drivers to delay travel until the winter weather has passed and crews have had time to treat roads.