Highway 18. The state trunk highway system includes the following in Oglala Lakota County: From a point on the Nebraska state line south of Pine Ridge near the northeast corner of section twenty-four, township thirty-five north, range forty-five west, thence north to U.S. Highway 18 in section twelve, township thirty-five north, range forty-five west. Source: SL 1984, ch 209 , § 110; SL 2015, ch 56 (HJR 1005), eff. May 1, 2015. 31-4-238, 31-4-239. Repealed by SL 1998, ch 168 , §§ 4, 5 31-4-240. Repealed by SL 2005, ch 150 , § 4. 31-4-241. Repealed by SL 1994, ch 237 , § 6 31-4-242. Repealed by SL 1990, ch 225 , § 4