sentences:  The roads rejoin north of Leander.In 2015, it was announced work would start on the conversion of the then-55-year-old portion of US 183 from US 290 to SH 71 into a three-to-five-lane tollway.The traffic lights at 51st Street, Techni Center Drive, Bolm Road (formerly a diamond interchange), Vargas Road, and Thompson Lane were all removed.