sentences:  US 183 eventually becomes a six-lane freeway north of the Windsor Park district just before crossing US 290, curving west to serve I-35 and Loop 275 (Lamar Boulevard); north of Lamar Boulevard, US 183 is redesignated as Research Boulevard throughout the rest of its length in Austin.The highway makes another sigmoid curve to the north before an interchange with Loop 1 (Mopac Expressway).After an interchange with Loop 360 (Capital of Texas Highway), US 183 serves much of northwest Austin.