The Texas Department of Transportation is expanding RM 1431 from four to six lanes between Market Street and Cottonwood Creek Trail to match the six-lane East Whitestone Boulevard pass-through project finished by the city of Cedar Park, Williamson County and TxDOT in 2016. The $12,847,145 project began last year, and TxDOT plans construction will last throughout the year. Timeline: February 2017-late 2018/early 2019