US 21 (Statesville Road) widening from SR 2136 (Gilead Road) to Holly Point Drive and from Northcross Center Court to SR 2147 (Westmoreland Road), Mecklenburg County, North Carolina, WBS 50180.1.1 and 50183.1.1, STIP project numbers U-5767 and U-5771 : administrative action, state environmental assessment, finding of no significant impact