If you didn't think about it - watch out for tons of sand out there. Took advantage of the nice weather P-day and made a loop from Arlington towards the Leesburg area and back.
Georgetown Pike, Belmont Ridge, Gum Springs and anything in between had heavy helpings of sand/gravel that still occupies the middle of the lanes.
Also there's a number of housing developments going in, in the Belmot and Gum areas, right along the road. So the trucks are tracking a lot of dirt and even some 1-3 pound rocks.