. . . . "SH 310" . "South" . . "SH" . "State Highway 310" . . . . . "U.S. Highway 277" . . . . . "SH 310 (the South Central Expressway)" . . . . . . . . "SH 310" . . . . . . "Texas State Highway 310" . . . "North" . "Texas State Highway 310" . . . "310" . "Texas State Highway 311" . "Texas State Highway 277" . . "13357.5552" . . . "Texas State Highway 310" .