Crews from the Virginia Department of Transportation (VDOT) tackled snow-covered roads in northern Virginia this morning after a winter storm made for slick conditions.Footage from VDOT Northern Virginia shows trucks lined up to be loaded with sand at their Van Dorn Area Headquarters in Franconia.“While you were sleeping, our crews were hard at work refilling trucks and treating roads,” VDOT wrote in their caption.VDOT cautioned residents to avoid driving where possible this morning. Credit: VDOT Northern VA via Storyful