South Dakota Codified Laws 31-4-246. State Highway 1804
The state trunk highway system includes the following in Charles Mix, Hughes, Sully, Potter, Walworth, and Campbell counties:
(1) From a point south of State Highway 50 near the southwest corner of section nineteen, township ninety–six north, range sixty–six west, thence northerly to State Highway 50 near the southwest corner of section thirty–one, township ninety–seven north, range sixty–six west;
(2) From a point south of State Highway 44 near the southwest corner of section thirteen, township ninety–eight north, range sixty–nine west, thence northwesterly to State Highway 44 west of Platte near the northwest corner of section twenty–two, township ninety–nine north, range sixty–nine west;
(3) From a point on U.S. Highway 14 in Pierre in the southwest quarter of section twenty–eight, township one hundred eleven north, range seventy–nine west, thence northerly along Oahe Reservoir to U.S. Highway 212 west of Gettysburg in section twenty–nine, township one hundred eighteen north, range seventy–eight west;
(4) From a point on U.S. Highway 212 west of Gettysburg near the southwest corner of section twenty–four, township one hundred eighteen north, range seventy–eight west, thence northerly to a point near the northwest corner of section two, township one hundred eighteen north, range seventy–eight west;
(5) From a point south of U.S. Highway 12 near the northeast corner of section thirty–five, township one hundred twenty–three north, range seventy–eight west, thence northwesterly along Oahe Reservoir to U.S. Highway 12 east of Mobridge west of the northeast corner of section twenty–six, township one hundred twenty–four north, range seventy–nine west;
(6) From a point on U.S. Highway 12 in Mobridge near the southwest corner of section twenty, township one hundred twenty–four north, range seventy–nine west, thence northerly along Oahe Reservoir via Mobridge and Pollock to the North Dakota state line west of the northeast corner of section five, township one hundred twenty–eight north, range seventy–nine west.
Source: SL 1984, ch 209, § 119; SL 1989, ch 250, § 2.