The state trunk highway system includes the following in Jackson, Jones, and Lyman counties: From a point on State Highway 240 at Cactus Flats near the northeast corner of section thirty - six of township two south, range eighteen east, thence east via Kadoka, Belvidere, Murdo, Draper, Presho, Kennebec, and Reliance to Interstate Highway 90 near the southeast corner of section twenty - nine, township one hundred five north, range seventy - three west. Source: SL 1984, ch 209 , § 93; SL 1991, ch 231 , § 4.