South Dakota Administrative Rules
Title 70 - Department of Transportation
Article 70:01 - Administration - Highway Safety Signs and Notices
Chapter 70:01:02 - Speed limits
Section 70:01:02:15 - Butte County

(1) U.S. Highway 85 beginning 1 mile north of the junction with U.S. Highway 212 in Belle Fourche, then south for 0.75 mile, 45 miles per hour; then south on U.S. Highway 85 to the south end of the Belle Fourche River bridge, 35 miles per hour; then south to Lawrence Street, 25 miles per hour; then south to the junction with State Trunk Highway 34, 35 miles per hour; then south to a point 0.6 mile south of the junction with State Trunk Highway 34, 45 miles per hour;

(2) U.S. Highway 212 beginning 0.19 mile east of Birch Street in Newell, then westerly for 0.5 mile, 50 miles per hour;

(3) State Trunk Highway 34 beginning 0.4 mile west of the junction of U.S. Highway 85 and State Trunk Highway 34, then east to a point 0.4 mile east of the junction, 50 miles per hour;

(4) U.S. Highway 212 beginning at the junction of State Trunk Highway 79 in Newell, then east to a point 0.05 mile east of Girard Street, 30 miles per hour; then east 0.20 mile, 45 miles per hour;

(5) State Trunk Highway 79 beginning at the junction with U.S. Highway 212 in Newell, then north to Ninth Street, 25 miles per hour; then north for 0.20 mile, 45 miles per hour;

(6) State Trunk Highway 79 and U.S. Highway 212 beginning at their junction in Newell, then south to Ash Street, 25 miles per hour; then south to Hope Road, 45 miles per hour;

(7) U.S. Highway 212 beginning at the south junction with U.S. Highway 85 in Belle Fourche, then southeasterly for 0.68 mile, 25 miles per hour; then southeasterly and northeasterly for 0.44 mile, 30 miles per hour; then northeasterly for 0.23 mile, 45 miles per hour;

(8) U.S. Highway 212 beginning 0.4 mile west of the north junction with U.S. Highway 85 in Belle Fourche, then east for 0.2 mile, at 45 miles per hour; then east for 0.2 mile, 35 miles per hour;

(9) U.S. Highway 212 beginning at the junction of U.S. Highway 85 in Belle Fourche, then east for 0.3 mile, 25 miles per hour; then east for 0.2 mile, 40 miles per hour.