 The roadway continues north as US 11 (Lee Highway) across the mountain to Pulaski; US 11 also heads south along I-81 toward Wytheville.SR 100 joins I-81 as the Interstate heads northeast toward Roanoke.The two highways are paralleled by frontage roads as they pass through a diamond interchange with SR 658 (Greenbriar Road) at Draper and a partial cloverleaf interchange with SR 99 (Count Pulaski Drive) at McAdam.