The route was established in the 1920s, when it began at US 6 in Loma and went north to SH 64. The route was completely deleted in 1954 and reestablished by 1964, where it ended at Douglas Pass. The route was paved from Loma to Douglas Pass in 1972, when the southern terminus was extended to I-70. The route was extended back to SH 64 in 1975.