NTTA and TxDOT have begun putting down a saltwater mix called "brine" on streets and major highways to help prevent ice from sticking on the roads. TxDOT treated elevated surfaces, which are known to freeze first -- especially the big interchanges in North Texas.

An Arctic blast is expected to cause hazardous driving conditions across Texas this week. In the Houston area, the National Weather Service has issued a Winter Storm Watch that goes into effect Monday evening and lasts through Tuesday afternoon.