 The piece south of Clintwood was renumbered SR 122 in the 1928 renumbering, and that same year it was extended south from Clintwood to Dungannon and southeast to end at SR 107 (now SR 71).SR 122 was renumbered SR 72 in the 1933 renumbering.In 1949, the section south of Dungannon was transferred to the secondary system as SR 774, due to its "local character and very low traffic volume" of 187 per day.