TRAFFIC ALERT: Northbound and southbound I-35 full rolling closures of mainlanes and frontage roads from Stassney Ln. to south of William Cannon Dr. on Thurs., March 20 from 7 p.m. to 6 a.m. for utility work. Closures will last no more than 20 minutes. Expect delays. #ATXtraffichttps://t.co/Ga7bKvwhqR