S.D. Highway 73 - Kadoka to the White River

Project Summary:

S.D. Highway 73 - From South of the White River to Kadoka

• Grading
• Structure Work
• Interim Surfacing
• Lighting

Project Timeline:

March 2025 - June 2026

Project Updates:

May 20, 2025: 

April 15, 2025 – May 15, 2025, Completed Work:  

Unclassified excavation continued for earthwork balances on the south end of the project. The contractor completed cold milling asphalt up to the White River Bridge. They also continued removing old base course and undercutting on the south end. The contractor began installation of RCP pipe, starting on the south end of the project, bypassing some areas and doing locations convenient for the contractor. Approach pipe installation began and was completed on the south end of project. Fence removal and installation of temporary fence was continued but not finished. The contractor began boring and installation of the waterline pipe under the mainline, completing across all mainline boring locations. They also began setting new base course and grading road off bluetops on the south end of the project (1st lift). The contractor completed the removal of the old box culvert and installed the diversion as well as put base course down for the diversion and put signage up. 

Anticipated work in May 15, 2025 – June 15, 2025:  

The contractor plans to continue unclassified excavation on the south end of the project and will start cold milling asphalt on the north side of the White River Bridge. They will then begin removal of old base course and undercutting after cold milling asphalt. They plan to continue setting new base course and grading road on the south end of the project. Completion of fence removal and installation of temporary fence is planned with further installation of RCP pipe to be completed. The contractor plans to begin water main installation work, looking to mobilize equipment, crew, and pipe. They also have plans for installation of the new box culvert. 

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PCN: 05HV