 PA 923 was designated in 1930 as a short spur of PA 124 heading south into York Furnace.In 1937, PA 124 was rerouted to head south from York Furnace to PA 851 in Fawn Grove, replacing all of PA 923 and the section of PA 851 between PA 74 in Airville and Woodbine.Most of former alignment of PA 124 in Lancaster County became an extended PA 324, with New Danville Pike south of New Danville becoming an extended PA 922 and Penn Grant Road becoming unnumbered.