Due to the possibility of winter weather, TxDOT crews have pretreated all bridges, overpasses, interstates. In addition, teams will treat roads as necessary and work through the night. Drivers should exercise caution and keep a safe distance between cars while on the road. Drivers should also be aware of convoys spreading brine on the roads ahead of possible winter weather. Brine is a mixture of salt and water used to prevent ice and snow from sticking to the road.