The following are the maximum speeds on certain highways in Charles Mix County:

1. (1) State Trunk Highway 46 beginning 1.2 miles west of Walnut Avenue in Wagner, then east 0.69 mile, 55 miles per hour; then east 0.25 mile, 40 miles per hour; then east 1.62 miles, 30 miles per hour; the east 0.25 mile, 45 miles per hour;
2. (2) State Trunk Highway 50 beginning one-half mile east of the intersection with Charles Mix County Highway GL29BM and ending at the intersection, 35 miles per hour;
3. (3) U.S. Highway 18 and U.S. Highway 281 from the west Charles Mix County line, then east for 1.75 miles past Pickstown to the junction with State Trunk Highway 46, 45 miles per hour;
4. (4) State Trunk Highway 44 through Platte beginning 0.6 mile west of the junction with State Trunk Highway 45, then east for 0.25 mile, 45 miles per hour; then east for 0.95 mile, 30 miles per hour; then east for 0.43 mile, 45 miles per hour;
5. (5) State Trunk Highway 45 through Platte beginning at the junction of State Trunk Highway 44 and State Trunk Highway 45, then north for 0.32 mile, 20 miles per hour; then north for 0.46 mile, 30 miles per hour; then north for 0.55 mile, 45 miles per hour;
6. (6) United States Army Corps of Engineers roads located in the Fort Randall Dam Tailrace Area, beginning at U.S. 18-281 in the northwest quarter of section 8, township 95 north, range 65 west of the fifth principal meridian, extending southerly throughout the entire area, 35 miles per hour, as posted;
7. (7) United States Army Corps of Engineers roads located in the Fort Randall Dam Spillway Area, beginning at U.S. 18-281 in the northwest quarter of section 9, township 95 north, range 65 west of the fifth principal meridian, extending southerly to and throughout the entire area, 35 or 25 miles per hour, as posted;
8. (8) United States Army Corps of Engineers roads located in the Fort Randall Dam North Point Area, bounded on the south by Lake Francis Case, on the east by U.S. 18-281, on the north and west by the U.S. government boundary, extending to and throughout the entire area, 15, 20, 25, 30, 35, and 45 miles per hour, as posted;
9. (9) United States Arny Corps of Engineers roads located in the Fort Randall Dam White Swan Area, beginning approximately 3,290 feet south of the northwest corner of section 33, township 96 north, range 66 west of the fifth principal meridian, extending southerly toward Lake Francis Case, 25 miles per hour;
10. (10) United States Army Corps of Engineers roads located in the Fort Randall Dam Pease Creek Area, beginning at the west line of section 11, township 96 north, range 67 west of the fifth principal meridian, extending westerly and southerly throughout the entire area, 15 and 20 miles per hour, as posted;
11. (11) United States Army Corps of Engineers roads located in the Fort Randall Dam North Wheeler Area, beginning at the north line of section 1, township 96 north, range 68 west of the fifth principal meridian, extending southerly throughout the entire area, 25 miles per hour;
12. (12) United States Army Corps of Engineers roads located in the Fort Randall Dam Turgeon Wells Area, beginning at the U.S. government boundary line in the northwest quarter of section 25, township 100 north, range 71 west of the fifth principal meridian, extending southerly toward Lake Francis Case, 25 miles per hour;
13. (13) United States Army Corps of Engineers roads within the United States government townsite of Pickstown, located in sections 4 and 9, township 95 north, range 65 west of the fifth principal meridian, 25 miles per hour;
14. (14) U.S. Highway 18 and U.S. Highway 281, beginning 0.75 mile southwesterly of Third Avenue in Lake Andes, then north and easterly for 0.5 mile, 50 miles per hour; then easterly for 0.75 mile, 40 miles per hour; then east for 0.4 mile, 50 miles per hour;
15. (15) State Trunk Highway 50, beginning 0.45 mile west of Third Avenue in Lake Andes, then east 0.2 mile to Pickstown Avenue, 50 miles per hour; then for 0.35 mile through Lake Andes to the intersection of U.S. Highway 18 and U.S. Highway 281, 35 miles per hour;
16. (16) Pickstown Avenue in Lake Andes from State Trunk Highway 50 south 0.43 mile to U.S. Highway 18 and U.S. Highway 281, 50 miles per hour;
17. (17) State Trunk Highway 1804 beginning at milepost 86.01, then north 3.79 miles to the end of State Trunk Highway 1804 at the intersection with State Trunk Highway 50, 55 miles per hour;
18. (18) State Trunk Highway 1804 beginning at the resume of State Trunk Highway 1804 at milepost 112.13, then north 8.04 miles to the end of State Trunk Highway 1804 at the intersection with State Trunk Highway 44, 55 miles per hour;
19. (19) State Trunk Highway 46, beginning at the intersection with U.S. Highway 18 at Pickstown, then east 0.23 mile, 45 miles per hour.

Source: SL 1975, ch 16, § 1; 3 SDR 10, effective August 11, 1976; 7 SDR 25, effective September 22, 1980; 8 SDR 45, effective October 28, 1981; 8 SDR 154, effective May 26, 1982; 10 SDR 7, effective July 31, 1983; 13 SDR 179, effective June 1, 1987; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 14 SDR 85, effective December 23, 1987; 18 SDR 134, effective February 24, 1992; 22 SDR 165, effective June 2, 1996; 28 SDR 24, effective August 29, 2001; 28 SDR 129, effective March 24, 2002; 30 SDR 22, effective August 25, 2003; 34 SDR 135, effective November 19, 2007; 44 SDR 184, effective June 25, 2018 ; 47 SDR 27, effective September 14, 2020 .

General Authority: SDCL 32-25-7.

Law Implemented: SDCL 32-25-7.

Prior versions effective: 2018-06-25, 2007-11-19.