State Park and onward to SH-50, was split into two highways, with the middle section through the park being decommissioned. The section of highway east of the park was renumbered to SH-50B. Also occurring on October 6, 1958, was the southern extension of SH-50, starting at US-183/270/SH-3, continuing north to SH-15, and continuing east along SH-15 to Mooreland, where it linked up with existing SH-50. The extension would not be shown on state highway maps until the 1960 edition, however. The highway was at its greatest extent from 1958 to 1964, when it started at its present-day southern terminus and continued all the way north to the Kansas state line. However, virtually all of the highway north of Freedom was concurrent with another route. On November 9, 1964, SH-50 was truncated to end at its present-day northern terminus at US-64. In the early 1980s, a new bridge was built across the Cimarron River south of Freedom. SH-50 was realigned to use this new crossing on April 6, 1981. No changes have occurred to the highway since then. Spurs SH-50 has two lettered spurs. They each run to a state park. SH-50A SH-50A connects SH-50 to Alabaster Caverns State Park near Freedom. SH-50B SH-50B connects SH-50 to Boiling Springs State Park near Mooreland. Junction list References 050 Transportation in Woodward County, Oklahoma Transportation in Woods County, Oklahoma