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

1. (1) State Trunk Highway 28 beginning 0.2 mile west of State Trunk Highway 21, then east 0.8 mile, forty-five miles per hour; then east 1.54 miles, fifty-five miles per hour;
2. (2) State Trunk Highway 28 beginning 0.22 mile west of the southeast corner of section 24, township 113 north, range 51 west of the fifth principal meridian, then west for 0.3 mile, forty-five miles per hour; then west for 0.57 mile, thirty-five miles per hour; then west for 0.2 mile, forty-five miles per hour;
3. (3) State Trunk Highway 28 beginning 0.35 mile west of the junction with South Broadway Street in Bryant, then east 0.2 mile, forty-five miles per hour; then east 0.83 mile, thirty-five miles per hour; then east 0.2 mile, forty-five miles per hour;
4. (4) U.S. Highway 81 beginning at the Hamlin and Brookings county line, then north for 1.25 miles, forty miles per hour;
5. (5) State Trunk Highway 21 beginning at the junction of State Trunk Highway 21 and State Trunk Highway 28, then north five miles to a point one thousand five hundred feet south of Main Avenue in Hayti, fifty-five miles per hour; then north one thousand feet, forty-five miles per hour; then north to Main Avenue, twenty-five miles per hour; then east to Fourth Street, twenty-five miles per hour; then north to Redbird Avenue, twenty-five miles per hour; then east one thousand six hundred feet, twenty-five miles per hour; then east one thousand feet, forty-five miles per hour;
6. (6) State Trunk Highway 28 beginning 2.6 miles east of the junction of U.S. Highway 81, then east for 1.6 miles, fifty-five miles per hour;
7. (7) State Trunk Highway 22 beginning 0.38 mile west of the junction of State Trunk Highway 22 and County Road "C", then east for 0.59 mile, fifty-five miles per hour; and
8. (8) State Trunk Highway 22 beginning 0.1 mile west of the junction with 450^th Avenue, then east through Thomas for 0.47 mile, fifty-five miles per hour.

Source: SL 1975, ch 16, § 1; 4 SDR 26, effective October 31, 1977; 6 SDR 109, effective May 29, 1980; 7 SDR 25, effective September 22, 1980; 7 SDR 117, effective June 21, 1981; 11 SDR 73, effective November 29, 1984; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 20 SDR 45, effective October 4, 1993; 22 SDR 165, effective June 2, 1996; 24 SDR 56, effective November 3, 1997; 28 SDR 24, effective August 29, 2001; 28 SDR 181, effective July 4, 2002; 33 SDR 63, effective October 18, 2006; 38 SDR 8, effective August 3, 2011; 38 SDR 58, effective October 18, 2011; 44 SDR 184, effective June 25, 2018 ; 46 SDR 64, effective November 25, 2019; 51 SDR 52, effective November 11, 2024; 52 SDR 41, effective October 27, 2025 .

General Authority: SDCL 32-25-7 .

Law Implemented: SDCL 32-25-7 .

Prior versions effective: 2024-11-11, 2019-11-25, 2018-06-25, 2011-10-18.