Section 31-4-247 - State Highway 1806 The state trunk highway system includes the following in Gregory, Lyman, Stanley, and Corson counties:
(1) From a point on U.S. Highway 18 west of Bonesteel near the northeast corner of section two, township ninety-five north, range sixty-nine west, thence northeasterly to a point in section twenty, township ninety-seven north, range sixty-eight west;(2) From a point south of State Highway 44 north of the southwest corner of section nine, township ninety-eight north, range seventy west, thence northerly to State Highway 44 west of Platte in section twenty-four, township ninety-nine north, range seventy-one west;(3) From a point on State Highway 273 north of Kennebec near the northeast corner of section eighteen, township one hundred seven north, range seventy-five west, thence northwesterly along Lake Sharpe to U.S. Highway 83 south of Fort Pierre in section two, township four north, range thirty-one east;(4) From a point on U.S. Highway 14 in Fort Pierre in the southeast quarter of section twenty, township five north, range thirty-one east, thence northerly along Oahe Reservoir to a point near the southwest corner of section twenty-four, township eight north, range twenty-seven east;(5) From a point south of U.S. Highway 12 at Sacajawea Monument near the south line of section thirteen, township eighteen north, range twenty-nine east, thence northerly to U.S. Highway 12 in section thirty-six, township nineteen north, range twenty-nine east;(6) From a point on U.S. Highway 12 near the southeast corner of section twenty-five, township nineteen north, range twenty-nine east, thence northerly along Oahe Reservoir to a point in section twenty-four, township twenty-two north, range twenty-nine east.