Resurrecting this thread for a minor update.
I drove the Rodanthe Jughandle bridge last week, after it opened (finally!) the preceding week. The north end of the new alignment is now a closed intersection and can be relabeled as such (*OldNC12_N), with that end of the old road coned off, pending its planned removal within the wildlife refuge after all the power and other utility lines have been moved to the new bridge. The other end of the old road, south of the wildlife refuge, remains open for access to local business and residences, so no relabel needed for OldNC12_S.