Friday, Nov. 13, through Sunday, Nov. 22, 2026
U.S. Highway 16A remains closed in Keystone, and westbound Interstate 90 is newly down to one lane at 45 mph in two work zones east of Wasta and east of Wall. In Rapid City, the Sioux Avenue and East Saint Patrick Street intersection closes Wednesday.
Interstate 90
I-90 between Exit 17 (U.S. 85 south) and Whitewood, Exit 23, remains one lane with a 65 mph limit and a 16-foot width limit until further notice, per SD 511.
I-90 from 1 mile west of Piedmont, Exit 44, to just west of Summerset, Exit 48, remains one lane in each direction until further notice for the Exit 46 rebuild, with a 65 mph limit, 45 mph when workers are present, and a 16-foot width limit, per SD 511.
Westbound I-90 east of Wasta, from 3 miles to three-quarters of a mile east of Exit 98, is down to one lane for pavement repair, with a 45 mph limit and a 16-foot width limit until 4 p.m. Monday, Nov. 16, per SD 511. New; it ends this week.
Westbound I-90 east of Wall, from 2.5 to 1.5 miles east of Exit 112, is down to one lane for pavement repair, with a 45 mph limit and a 16-foot width limit until further notice, per SD 511. New.
Rapid City and Pennington County
U.S. Highway 16A in Keystone remains closed at the S.D. Highway 40 intersection for a bridge replacement until further notice. A detour is provided, according to SDDOT's project page.
Rapid City streets, from the city's road construction page (end dates are estimates):
- Sioux Avenue and East Saint Patrick Street: starting Wednesday, Nov. 18, the intersection closes for paving, along with the outside lane of East Saint Patrick Street and the north sidewalk, through Tuesday, Dec. 1. New.
- Corral Drive has its inside lane and the inside turn lane from Sheridan Lake Road closed, now through Tuesday, Nov. 17, extended from Nov. 13.
- Jackson Boulevard has the southwest outside lane closed from West Main Street to Mountain View Road through Friday, Nov. 13.
- Due to end Friday, Nov. 20: South Street closed from 12th Street to West Boulevard; East Saint Charles Street closed from Sioux Avenue to Riley Avenue and Sioux Avenue closed from East Saint Patrick to East Franklin Street; and the Saint Joseph Street north sidewalk between Fourth and Fifth streets.
- Viking Drive remains closed at Haines Avenue for sewer repair, with a detour to Bengal Drive, through Monday, Nov. 30.
- Unchanged, with the same estimated end dates: Elm Avenue and Fairmont Boulevard intersection closed, with work moving to Maple Avenue (Thursday, Nov. 26); Elmhurst Drive closed to through traffic (Friday, Nov. 27); one lane of Canyon Lake Drive closed from Clifton Street to Minnekahta Drive (Monday, Nov. 30); Post 320 sidewalks (Tuesday, Dec. 1); one eastbound lane of West Main Street near Mountain View Road (Friday, Dec. 18); and the Cherry Avenue and East Saint Charles Street intersection (Tuesday, Dec. 22).
Spearfish, Deadwood, Lead and Lawrence County
North Avenue in Spearfish, at I-90 Exit 10, is in its final phase, with the project completion date set for Friday, Nov. 20, SDDOT said. While crews build the northern median, left turns from Old Highway 14 and northbound left turns from North Avenue onto Old Highway 14 are prohibited; SDDOT suggests Exit 8, and all I-90 ramps stay open. North Avenue remains one lane each way with a 35 mph limit, no passing and a 16-foot width limit until further notice, per SD 511. Engineer Zach Kuhn, 605-892-2872.
U.S. Highway 14A at Cheyenne Crossing, from the U.S. 85 junction to a half mile east, is still one lane under temporary signals for a culvert replacement, with delays of about 10 minutes and a 12-foot width limit until further notice. SD 511 still expects two lanes back by November.
Custer, Hill City and Custer County
S.D. Highway 87 in Custer State Park, from three-quarters to a half mile south of the west junction with U.S. 16A, now has flaggers, a pilot car, one lane, no passing and delays of about 15 minutes daily from 6 a.m. to 5 p.m. until further notice for a curve realignment, per SD 511. A second curve project on U.S. 16A, from mile marker 45.6 to 45.9, about a half mile south of S. Playhouse Road, also has flaggers and a pilot car during working hours, with both roads open evenings, according to SDDOT's Nov. 2 notice. Engineer Montana Rivard, 605-981-5089.
Hot Springs and Fall River County
U.S. Highway 385 in Hot Springs, 1 to 1.5 miles north of the U.S. 18 West junction, has a lane shift for a city bridge project and no vehicles wider than 12 feet until further notice, per SD 511.
S.D. Highway 79 north of Hot Springs, from the U.S. 18 and U.S. 385 junction east of town to 7.25 miles north, has northbound pavement repair with one lane, no passing and a 16-foot width limit Monday through Saturday from 6 a.m. to 5 p.m. until further notice, per SD 511.
Done or past their end dates in Rapid City: Saint Patrick Street between Cambell Street and Ash Avenue; North LaCrosse Street; Addison Avenue; the Saint Joseph Street and Second Street lane closure; Creek Drive; and Old Folsom Road.
Later: SDDOT holds an open house Tuesday, Nov. 17, at 5:30 p.m. at the New Underwood Community Center on proposed I-90 reconstruction from two miles east of New Underwood to four miles west of Wasta, including removal of the Exit 88 ramps; written comments are due Tuesday, Dec. 8. New signals at Spearfish Exit 10 are expected in January 2027. U.S. 16A in Keystone is scheduled to reopen by April 23, 2027, and the Exit 46 work at Piedmont runs through December 2028.
For live conditions, check sd511.org or dial 511, and for local streets, check with your city or county.
