About the Project

Construction Information:

The week of 29 February 2016, Oftedal Construction will begin Phase 3 of the Highway 85 Deadwood Project which includes US85 / Cliff Street in Deadwood from the junction of US 85 and US 385 to Walnut Street. The Phase was originally scheduled to begin April 2016 with a completion date of September 2016.  The early start puts the project ahead of schedule.

Phase 3 is the final phase.  The overall completion date for the project is September 2016.

There will be short breaks in construction work during Sturgis Motorcycle Rally. The project team will not conduct road work from July 27 through August 7 in 2016. The project team may work on areas of the project that do not affect US85 traffic during this time.

For more information about the project, download the project fact sheet.


General Information:

  • Reconstruction work will include: Grading, Storm Sewer, Curb and Gutter, Sidewalk, Asphalt Concrete Surfacing, Cold Milling Asphalt Concrete, Asphalt Concrete Resurfacing, Roadway Lighting and Signal Upgrade
  • Project Amount (City): $1,079,754.12
  • Project Amount (State): $13,079,963.26


Prime Contractor Information


We will continue to update this page with additional information as it becomes available. For details about the project plan, detours, traffic, and other public information, visit the Traffic or Resources pages on this website.


**All construction zones, detours, and timeframes are estimates and are subject to change**