As an arctic blast approaches San Antonio, be on the lookout Thursday for TxDOT crews treating roadways to prevent icing. Only a tenth of an inch of frozen rain or sleet can make a road dangerous. And that's about the amount likely to fall on the San Antonio area this weekend.

SAN ANTONIO – As cold weather makes its way to the San Antonio area, KSAT received a behind-the-scenes tour of a TxDOT facility that creates the brine used on highways to help keep drivers safe. Brine is a mixture of water and salt commonly used by TxDOT ...