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.

Sign Up for Text Notifications:

For updates on MAJOR traffic changes, subscribe to a free text-in service. To subscribe, simply text the keyword listed below to 605-566-4041. Subscribers can unsubscribe at any time. 

Text Lyman47 to 605-566-4041

Project Timeline:

Spring 2025 - Fall 2025

Project Updates:

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:

STATEWIDE CONSTRUCTION PROJECTS PAGE

PCN: 05UN, 06Q8, 069Q, 06YC