The state trunk highway system includes the following in Tripp and Lyman counties:

From a point on U.S. Highway 18 at Colome north of the southeast corner of section thirty–three, township ninety–eight north, range seventy–five west, thence northerly to State Highway 47 south of Reliance in the southeast quarter of section fifteen, township one hundred three north, range seventy–three west.

Source: SL 1984, ch 209, § 42; SL 1986, ch 236, § 1.