FAQ’s:

• Where can I find information relating to temporary road closures? https://www.sd511.org/ 
  
  
• Where can I find road construction information? https://www.sd511.org/ 
  
  
  

  US‑385 Construction & Traffic Advice

  Where can I find information on U.S. Highway 385 road construction? https://us-385.com
  
  Construction activities will be paused beginning Wednesday, July 30, 2025, for the Sturgis Rally.  Watch KOTA video by clicking here
  

  Find additional Highway 385 project information, including maps, timelines, and construction updates, on the website at https://www.US-385.com. For updates on major traffic changes on the Highway 385 project, subscribe to a free text-in service—to subscribe, text “US385” to 605-566-4041. Subscribers can unsubscribe at any time.

  Construction Phasing Ahead of Rally:

  • Ongoing surfacing and milling projects on US‑385 from Pennington–Lawrence county line through areas south of Pactola Dam US 385SDDOT.

  • Expect loose gravel, narrowed lanes, pilot cars, and flagger‑controlled delays up to 15 minutes through late July.

  Rally Traffic Pause:

  • Construction traffic pauses from July 30 to August 11, with lanes open and temporary hard surface in place by July 23 US 385SDDOT.

  • After the rally: Road closures resume in phases through October 2025 and into early 2026 .

  Rider Safety Tips:

  • Motorcycles and trailers should ride cautiously over gravel and remain alert to delayed surfaces and changing traffic control

• What amenities are offered at interstate rest stops? View Here
  
  
• What roadways have reduced speed limits or temporary traffic signals? View Below

Speed limits are reduced on the following highways:

*Speed limits will be reduced on the following highways from Thursday, July 31, 2025, through Sunday, Aug. 10, 2025.

• • The Interstate 90 speed limit will be reduced from 75 mph to 65 mph from west of exit 55 (Deadwood Avenue) in Rapid City to west of exit 30 (Lazelle Street) in Sturgis.

• • The S.D. Highway 34 speed limit will be reduced from 65 mph and 45 mph to 35 mph from Blanche Street in Sturgis, east approximately four miles (east of Buffalo Chip).

• • The S.D. Highway 79 speed limit will be reduced from 65 mph to 45 mph from the junction of S.D. Highway 34 north approximately two miles (north of Iron Horse Campground) and from 0.05 miles south of the intersection with Bighorn Road north approximately one mile, near the Full Throttle Saloon and Drag Pipe Saloon approaches.

 Temporary traffic signals will be installed at the following locations:

• S.D. Highway 34/79 and Nellie Avenue;
• S.D. Highway 34/79 and Ft. Meade main entrance;
• S.D. Highway 34/79 and Glencoe Drive;
• S.D. Highway 34 and S.D. Highway 79 east of Sturgis;
• S.D. Highway 34 and Ft. Meade Way (Buffalo Chip);
• S.D. Highway 44 and U.S. Highway 385;
• U.S. Highway 16 and U.S. Highway 385 east of Hill City;
• S.D. Highway 34/79 and 8^th Street in Sturgis;
• S.D. Highway 34/79 and 11^th Street in Sturgis;
• Interstate 90 exit 32 westbound ramp;
• Interstate 90 exit 32 eastbound ramp; and
• Interstate 90 exit 55 eastbound ramp

The traffic signals will be in full operation from Friday, July 25, 2025, through the end-of-day on Monday, Aug. 11, 2025.