S.D. Highway 47 Lyman County Fort Thompson to Iona
Project Summary:
This project will consist of asphalt concrete surfacing, pipe repair, and box culvert replacements.
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Project Timeline:
Spring 2025 - Fall 2025
Project Updates:
Aug. 7, 2025:
As of Thursday, Aug. 7, 2025, S.D. Highway 47 from the junction with S.D. Highway 44 north to the Highway 49 junction will reopen to traffic. This section of Highway 47 was closed over the past month for the installation of a new precast box culvert.
Work will continue on the project from the Highway 47/Highway 49 junction north toward Interstate 90.
The prime contractor on this $21.2 million reconstruction project is Spencer Quarries Inc. from Spencer, SD. The overall project completion date is Friday, Nov. 14, 2025.
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July 18, 2025:
June 15, 2025 – July 15, 2025, Completed Work: The contractor began asphalt concrete paving and continued to work on the pipe repair and replacements throughout the project. The concrete is all placed for the box culvert towards the south end of the project. The contractor completed the full depth reclamation on the shoulders for the project. Construction of the turn lane widening has been completed at the intersection of S.D. Highway 47 and Bureau of Indian Affairs Road #10. Highway 47 between S.D. Highway 44 and S.D. Highway 49 has been closed for the installation of a pre-cast box culvert at Bull Creek.
Anticipated work July 15, 2025 – Aug. 15, 2025: The contractor will continue to work on the pipe repair and replacements for the project. Asphalt paving will continue from north to south. The contractor will install the new pre-cast box culvert at Bull Creek and backfill the cast in place box culvert towards the south end of the project. Cold milling will be completed from the south end of the project to Highway 49.
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June 25, 2025:
Closure Planned for S.D. Highway 47 East of Winner
WINNER, S.D. – On Monday, July 7, 2025, work is scheduled to begin on a precast box culvert installation on S.D. Highway 47 east of Winner. This installation will require a 30-day closure for all through traffic on Highway 47 from the junction with S.D Highway 44 north to the S.D. Highway 49 junction. The project to install the new precast box culvert on Highway 47 requires full closure of the road as the area doesn’t allow for any traffic diversion.
During this box culvert installation project, three deep pipe installations and repairs will take place. The deep pipe work locations are located approximately one mile south of the junction with Highway 49 and Highway 47, approximately three-quarters of a mile south of the intersection of Bull Creek Road, and approximately one mile south of the intersection of Hammerbeck Road. At these pipe installation locations, the contractor will provide a path for nearby residences to travel. Only local traffic will be allowed on this section of Highway 47 during the road closure.
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June 23, 2025:
May 15, 2025 – June 15, 2025, Completed Work: The contractor continued to work on pipe repair and replacements throughout the project. Cold milling has been completed from Big Bend Dam to the intersection of S.D. Highway 47 and S.D. Highway 49. The contractor has placed concrete for the floor and setting up forms for the walls of the cast in place box culvert. The contractor began full depth reclamation on the north end of the project working south. Permanent seeding of the pipe repair locations has also been taking place.
Anticipated work June 15, 2025 – July 15, 2025: The contractor will continue to work on the pipe repair and replacements along the project. Work on the cast in place box culvert will continue. Work on the precast box culvert will begin in the first part of July. Asphalt concrete paving will begin on the north end of the project and proceed to the south.
Project Photos:
Project Contract Amount:
$21.2 Million
Project Contacts:
SDDOT:Mark Peppel
tel:605-961-4926
Contractor:
Spencer Quarries Inc.
STATEWIDE CONSTRUCTION PROJECTS PAGE
PCN: 05UN, 06Q8, 069Q, 06YC
