U.S. Route 70 Alternate (US 70A) was established in 1934 as a renumbering of NC 10A, which traveled from Chapel Hill Street, in downtown Durham, southeast on Main Street and Angier Avenue, to Miami Boulevard, in Bethesda. In 1937, US 70A was extended southeast into Raleigh, via Glenwood Avenue, Peace, Person, Edenton, and East Streets, ending at Lenoir Street; this replaced NC 9. In 1948, US 70A was replaced by US 70.
