Construction on what became MD 24 between Van Bibber and Bel Air got underway with the construction of a section of macadam road from Ring Factory Road south to Plumtree Road near Emmorton between 1925 and 1927. Another macadam segment was completed from Emmorton south to Singer Road at Norris Corner in 1928. A concrete highway from Norris Corner toward US 40 at Van Bibber was started in 1929. The first section was completed to approximately the location of I-95 in 1930 and to Van Bibber by 1933. Two county highway gaps in the state highway from Van Bibber to Bel Air were resurfaced with macadam and brought into the state system in 1933.