By 1958, NC 11 was rerouted to its current alignment in Greenville along Memorial Drive; its old alignment along Dickinson Avenue to Greene Street was downgraded to secondary roads. By 1963, the spur to the North Carolina Coastal Experimental Station was downgraded to secondary road and NC 11 was truncated at US 117 near Wallace. In 1966, NC 11 was extended north on new primary routing, across the Roanoke River, to NC 308, in Lewiston. In 1967, its northern terminus was extended again to NC 305, in Connaritsa. In 1969, NC 11/NC 55 was rerouted to its current alignment along Tiffany Street (today Dr. Martin Luther King Jr. Boulevard), with its old alignment along East Street and Washington Avenue downgraded to secondary roads. Near Grifton, NC 11 was placed on new western bypass, leaving behind Highland Boulevard/Avenue.
