NCDOT will interrupt NC 12 at Frisco from 7 PM 28 Feb to no later than 7 AM 3 Mar. They need to place a culvert before paving. Apparently no paved detour is possible, but a beach bypass for 4×4 vehicles is being worked out by the Park Service.
Those planning travel there for this period may call Dare County Administration 252 473 3444 for updates.
Epilog: To our great joy, this work was completed in record time, and NC 12 was reopened late 1 March.