Columbus city road crews this week-end face quick job changes. Spokeswoman Melanie Crabill says some crews will have to switch back and forth between filling potholes and prepping for snow and ice. "The same crews do both. Sometimes were able to pull some of the snow crews out and do potholes, right now we're just treating bridges, ramps and overpasses," says Crabill. National Weather Service meteorologist Jeffrey Sites says Columbus should prepare for cold and snow for the next week. "We're looking at a couple of different shots of snow and they're actually sort of associated with a couple of rounds of arctic air moving into the region," says Sites. Columbus road crews have patched nearly 20,000 potholes already this winter.