U.S. Highway 81 - North of Yankton
Project Summary:
This project consists of extending a four-lane divided highway north of Yankton on U.S. Highway 81.
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Project Timeline:
Nov. 2023 - Aug. 2025
*Timeline includes paving project summer of 2025
Project Updates:
Aug. 22, 2025:
July 15, 2025 – Aug. 15, 2025, Completed Work:
- Traffic was switched onto the newly surfaced southbound lane.
- The northbound lane was reshaped, and trimming began ahead of the concrete paving operation.
Anticipated Work Aug. 15, 2025 – Sept. 15, 2025:
- Concrete paving will begin on the northbound lanes and is anticipated to be completed by Sept. 9, weather permitting.
- Granular material on the shoulders will be shaped in preparation for asphalt paving.
Project Photos:
Project Contract Amount:
$16.7 Million - Phase One
$11.2 Million - Phase Two - Paving
Project Contacts:
Contractor:
Phase One: Loiseau Construction, Flandreau, S.D.
Luke Groos, Project Superintendent
612-704-9340
Phase Two: Michels Road and Stone, Inc. Brownsville W.I.
SDDOT Project Engineer:
Sam Caba 605-668-2929
Yankton Area Office:
605-668-2927
