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

1. (1) U.S. Highway 18 beginning 1.4 miles west of West Street in Canton, then east to West Street, forty-five miles per hour; then east to Blair Street, thirty-five miles per hour; then east to Milwaukee Street, twenty-five miles per hour; then east to Lawler Street, thirty-five miles per hour; then east to a location one hundred feet east of North Noid Road, forty-five miles per hour; then east to the Iowa border, fifty-five miles per hour;
2. (2) State Trunk Highway 46 beginning 0.5 mile west of the centerline of Interstate Highway 29, then east for 0.3 mile, forty-five miles per hour; then east for 0.7 mile, thirty-five miles per hour; then east for one mile through Beresford to East 13^th Street (also known as 472^nd Avenue), thirty miles per hour; then east for 0.3 mile, forty-five miles per hour;
3. (3) State Trunk Highway 17 beginning at the intersection with State Trunk Highway 44, then north for 1.4 miles past Lennox, forty-five miles per hour;
4. (4) State Trunk Highway 115 beginning at a point 0.5 mile south of Lincoln County Road 110, then north to a point 0.1 mile south of the intersection with Veterans Parkway, fifty-five miles per hour; then north to 85^th Street in Sioux Falls, forty miles per hour;
5. (5) State Trunk Highway 44 beginning 0.3 mile west of the centerline of Interstate 29, then east 0.5 mile, forty miles per hour;
6. (6) The crossroad over Interstate Highway 29 at Exit 50 beginning at a point 0.3 mile west of the centerline of Interstate Highway 29, then east 0.5 mile, thirty miles per hour;
7. (7) The crossroad over Interstate Highway 29 at Exit 53 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.4 mile, twenty-five miles per hour;
8. (8) The crossroad over Interstate Highway 29 at Exit 56 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.4 mile, forty miles per hour;
9. (9) U.S. Highway 18 over Interstate Highway 29 at Exit 59 beginning at a point 0.3 mile west of the centerline of Interstate Highway 29, then east 0.1 mile, forty-five miles per hour; then east 0.4 mile, thirty-five miles per hour;
10. (10) U.S. Highway 18 over Interstate Highway 29 at Exit 62 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.5 mile, fifty-five miles per hour;
11. (11) The crossroad over Interstate Highway 29 at Exit 68 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.3 mile, twenty-five miles per hour;
12. (12) The crossroad over Interstate Highway 29 at Exit 71 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.3 mile, twenty-five miles per hour;
13. (13) The crossroad over Interstate Highway 29 at Exit 73 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.3 mile, twenty-five miles per hour;
14. (14) State Trunk Highway 44 at Lennox beginning one mile west of the junction with State Trunk Highway 17 at Lennox, then east for 0.6 mile to a point two hundred feet west of Elm Street, forty-five miles per hour; then east for 0.5 mile, thirty miles per hour; then south for 0.3 mile, forty-five miles per hour;
15. (15) State Trunk Highway 11 beginning 1.8 miles south of the Minnehaha-Lincoln county line, then north to the Minnehaha-Lincoln county line, fifty-five miles per hour.

Source: SL 1975, ch 16, § 1; 5 SDR 91, effective April 29, 1979; 6 SDR 109, effective May 29, 1980; 7 SDR 1, effective July 20, 1980; 8 SDR 154, effective May 26, 1982; 13 SDR 52, effective November 6, 1986; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 15 SDR 185, effective June 4, 1989; 16 SDR 169, effective April 25, 1990; 17 SDR 127, effective March 3, 1991; 19 SDR 30, effective August 30, 1992; 20 SDR 183, May 9, 1994; 22 SDR 165, effective June 2, 1996; 26 SDR 44, effective October 4, 1999; 26 SDR 85, effective December 29, 1999; 28 SDR 24, effective August 29, 2001; 30 SDR 171, effective May 11, 2004; 33 SDR 43, effective September 19, 2006; 33 SDR 125, effective January 29, 2007; 37 SDR 182, April 20, 2011; 44 SDR 65, effective October 16, 2017 ; 47 SDR 58, effective November 30, 2020; 52 SDR 24, effective September 8, 2025; 52 SDR 106, effective May 25, 2026.

General Authority: SDCL 32-25-7 .

Law Implemented: SDCL 32-25-7 .

Prior versions effective: 2025-09-08, 2020-11-30, 2017-10-16, 2011-04-20.