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

1. (1) Interstate Highway 29 Business Loop beginning 0.1 mile south of the centerline of Interstate Highway 29 at Exit 15, then northwesterly for 1.28 miles, thirty-five miles per hour; then northwesterly through Elk Point for 0.94 mile, twenty-five miles per hour; then northwesterly for 0.61 mile, thirty-five miles per hour;
2. (2) State Trunk Highway 11 beginning 0.2 mile north of the intersection with Union County Highway 13, then north 0.3 mile, forty-five miles per hour; then north 0.6 mile, thirty miles per hour; then north 0.3 mile, forty-five miles per hour;
3. (3) The Elk Point Port of Entry by-pass beginning 0.36 mile north of the beginning of the main by-pass at northbound Interstate 29 mile post 12.67, then northwesterly for 0.70 mile, thirty-five miles per hour; the Elk Point Port of Entry scale road beginning 0.71 mile north of the beginning of the main by-pass at northbound Interstate 29 mile post 12.67, then northwesterly for 0.35 mile, twenty miles per hour;
4. (4) The crossroad over Interstate Highway 29 at Exit 38 beginning at a point 0.2 mile west of the centerline of Interstate Highway 29, then east 0.4 mile, thirty miles per hour;
5. (5) State Trunk Highway 11 beginning at its intersection with Franklin Street in Elk Point, then northwesterly 0.06 mile, twenty-five miles per hour; then northwesterly and north 0.38 mile, forty miles per hour;
6. (6) State Trunk Highway 50 beginning at the Clay County line, then east to a point 0.6 mile west of the centerline of Interstate 29, seventy miles per hour; then east for 0.2 mile, sixty miles per hour; then east-southeasterly for 0.96 mile, forty-five miles per hour;
7. (7) State Trunk Highway 105 beginning at a point 0.06 mile west of the west ramps of Interstate 29 at Exit 2, then east and northwesterly 1.99 miles through North Sioux City, thirty miles per hour; then northwesterly for 0.3 mile, forty-five miles per hour; then northwesterly 5.09 miles, fifty-five miles per hour; then northwesterly for 0.2 mile, forty-five miles per hour; then northwesterly for 0.8 mile through Jefferson, twenty-five miles per hour; then west for 0.14 mile to the west ramps of Interstate Highway 29 at Exit 9, forty-five miles per hour.

Source: SL 1975, ch 16, § 1; 2 SDR 71, effective May 1, 1976; 2 SDR 86, effective June 24, 1976; 3 SDR 10, effective August 11, 1976; 4 SDR 26, effective October 31, 1977; 5 SDR 91, effective April 29, 1979; 7 SDR 89, effective March 30, 1981; 8 SDR 89, effective January 24, 1982; 9 SDR 132, effective April 24, 1983; 13 SDR 52, effective November 6, 1986; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 15 SDR 158, effective April 26, 1989; 17 SDR 12, effective July 30, 1990; 17 SDR 127, effective March 3, 1991; 20 SDR 96, effective December 29, 1993; 22 SDR 165, effective June 2, 1996; 28 SDR 24, effective August 29, 2001; 31 SDR 165, effective May 11, 2005; 32 SDR 53, effective October 10, 2005; 37 SDR 18, effective August 16, 2010 ; 50 SDR 42, effective October 11, 2023 .

General Authority: SDCL 32-25-7 , 32-25-7 .1.

Law Implemented: SDCL 32-25-7 , 32-25-7 .1.

Prior versions effective: 2010-08-16.