S.D. Highway 28 East of Estelline to S.D. Highway 15
Project Summary:
The project will replace and upgrade all drainage structures leading to improved drainage. The project will be fully regraded cutting hills and filling valleys leading to improved sight distance. The project will include adding shoulder width to the segment.
- Drainage Upgrades
- Grading
- Shoulder Widening
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Project Timeline:
April 2025 - Nov. 2025
Paving Project to follow in 2026
Detour Map:
Project Updates:
Oct. 27, 2025:
Sept. 15, 2025 – Oct. 15, 2025, Completed Work:
The contractor has completed most of the rough grading on the project, with approximately 2,000 feet remaining east of Interstate 29. Temporary surfacing has been completed west of I-29. Erosion control measures and permanent fencing have been installed from I-29 to 465th Avenue. Gravel salvage and topsoil placement have been completed on the eastern two miles of the project.
Anticipated Work Oct. 15, 2025 – Nov. 15, 2025:
Ditch cleanup and minor shaping will be completed west of I-29. Topsoil placement and ditch shaping will continue on the west end near Estelline as conditions allow due to standing water. The remaining 2,000 feet of grading, along with final topsoil placement, erosion control, permanent fencing, and temporary surfacing, are expected to be completed by mid-November. The two-mile section from I-29 to 474th Avenue will remain gravel for the winter and will be treated with dust chloride. Temporary surfacing on this section is planned for spring 2026.
Project Photos:
Project Contract Amount:
$10.4 Million
Project Contacts:
SDDOT:Bryce Olson
605-881-7149
605-882-5166
STATEWIDE CONSTRUCTION PROJECTS PAGE
PCN: 04HM
