U.S. Highway 385
2024-2026 reconstruction information

The South Dakota Department of Transportation (SDDOT) is reconstructing a portion of U.S. Highway 385 between the Pennington-Lawrence county line and the south end of Sheridan Lake. Once completed, this section of U.S. Highway 385 will feature safety improvements, including new surfacing, additional turning lanes to improve traffic flow, and wider, improved road curves to meet current design standards.

Construction on the 15-mile project began in spring 2024 and is anticipated to be completed in fall 2026. Construction plans will include completely closing portions of the road for a period of time in consideration of traveler safety. Detours during road closures may add an extra 30 to 60 minutes to drivers’ commutes.

Travel South Dakota asks for your assistance in communicating this information to visitors. Here are resources that you and our visitors should find helpful:

  • For the latest information, go to US-385.com
     
  • For free text updates, text “US385” to 605-566-4041
     
  • Direct visitors to the Black Hills Visitor Information Center at Exit 61
     

PROJECT PHASES

PHASE 1: north half of project, from Pactola Dam north to the Pennington-Lawrence county line, spring 2024 — winter 2025 

  • as of July 12, 2024, all Phase 1 closures are complete
     
  • Closures A and B — see details
     

PHASE 2: south half of project, from the southern point of Sheridan Lake (Calumet Road) north to Pactola Dam, spring 2025 — fall 2026

 

PROJECT RESOURCES

 

PROJECT MAP

SDDOT U.S. Highway 385 project map, 2023

 

 

 

FOR INFORMATION

For more information, please contact Kirk Hulstein, Industry Outreach, Development & Research Senior Director, at 605-773-3301 or [email protected].