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

1. (1) State Trunk Highway 1804 beginning at the west junction with U.S. Highway 12 in Mobridge, then north for 0.5 mile, twenty-five miles per hour; then north for 0.3 mile, forty miles per hour; then north 3.9 miles to the Walworth-Campbell county line, fifty-five miles per hour;
2. (2) U.S. Highway 12 beginning 0.76 mile north of the junction with State Trunk Highway 130, then south for 0.2 mile, forty-five miles per hour; then south for 0.94 mile, thirty-five miles per hour; then south for 0.2 mile, forty-five miles per hour;
3. (3) State Trunk Highway 130 beginning at the junction with U.S. Highway 12 in Selby, then east for 0.7 mile, twenty-five miles per hour; then east for 0.15 mile, thirty-five miles per hour; then east to its junction with State Trunk Highway 271, fifty-five miles per hour;
4. (4) U.S. Highway 12 in Mobridge beginning at the junction with 287th Avenue, then west for 0.5 mile, forty miles per hour; then west for 1.3 miles, thirty miles per hour; then northwest for 1.6 miles, forty-five miles per hour; then northwest for 1.5 miles, fifty-five miles per hour;
5. (5) State Trunk Highway 271 in Java beginning at its junction with State Trunk Highway 130, then east 0.1 mile, fifty-five miles per hour; then east 0.5 mile, forty-five miles per hour; then north to the Walworth-Campbell county line, fifty-five miles per hour;
6. (6) State Trunk Highway 1804 beginning at its east intersection with U.S. Highway 12, then south 12.48 miles, fifty-five miles per hour;
7. (7) State Trunk Highway 271 beginning at its junction with U.S. Highway 12, then north 4.0 miles to its junction with State Trunk Highway 130, fifty-five miles per hour;
8. (8) State Trunk Highway 47 beginning at its west junction with State Trunk Highway 20, then east 0.4 mile, fifty-five miles per hour;
9. (9) State Trunk Highway 20 beginning at its junction with U.S. Highway 83, then east to its west junction with State Trunk Highway 47, fifty-five miles per hour; and
10. (10) State Trunk Highway 144 beginning at its junction with 303rd Avenue, also referred to as Riley Avenue, in Akaska, then east 0.27 mile, twenty-five miles per hour; then east 0.51 mile, forty-five miles per hour.

Source: SL 1975, ch 16, § 1; 3 SDR 75, effective May 1, 1977; 5 SDR 91, effective April 29, 1979; 6 SDR 5, effective July 30, 1979; 7 SDR 25, effective September 22, 1980; 11 SDR 112, effective February 25, 1985; 13 SDR 36, effective October 5, 1986; 13 SDR 77, effective December 28, 1986; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 18 SDR 134, effective February 24, 1992; 19 SDR 89, effective December 21, 1992; 22 SDR 165, effective June 2, 1996; 23 SDR 132, effective February 27, 1997; 25 SDR 48, effective October 4, 1998; 36 SDR 27, effective August 23, 2009 ; 47 SDR 109, effective April 26, 2021; 49 SDR 31, effective October 3, 2022; 51 SDR 52, effective November 11, 2024 .

General Authority: SDCL 32-25-7 .

Law Implemented: SDCL 32-25-7 .

Prior versions effective: 2022-10-03, 2021-04-26, 2009-08-23.