The first post-war project on MD 24 was the reconstruction of the highway from Norris Corner to Van Bibber starting in 1950. By the time the project to resurface the highway in bituminous concrete ended in 1952, MD 24 was extended south through Edgewood, replacing MD 408 from MD 7 to Aberdeen Proving Ground. MD 24 was widened and resurfaced with bituminous concrete from Norris Corner to Bel Air starting in 1954 and from Bel Air to Forest Hill beginning in 1956. The Norris Corner – Bel Air project included the highway's first relocation at Emmorton, leaving behind Old Emmorton Road.