our mark albert is live in prince george's county tonight with what you need to know for tomorrow. >> reporter: this is old bridge road in lake ridge. there are some slick spots on this stretch of road. i talked with a contract plow driver for vdot who thinks the roads would need a massive amount of salt right now to get ready for the morning commute. vdot says its goal is to make one pass on northern virginia's 16,000 neighborhood streets by sometime tomorrow. until then you'll want to be careful. add a few inches of wet snow and falling temperatures and this is what you get, sheets of ice glistening in some places, a hazardous mix. >> there's completely ice everywhere. >> reporter: fabian guerrero plans to leave extra early for work tuesday morning. >> see how it goes tomorrow morning if i can make it or not. >> reporter: the virginia department of transportation says its 4,000 trucks are staffed by crews on 12 hour shifts as they try to make all state roads passable within 48 hours, but as the snow stopped falling midafternoon, it wasn't so much the snow buildup that worried drivers. it was the plummeting temperatures free