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:

April 22, 2025:

March 15, 2025 – April 15, 2025, Completed Work: The contractor started pipe repair and replacement work on the north end of the projects working towards the south end. Work also started on the traffic diversion for the south box culvert construction.  

Anticipated work April 15, 2025 – May 15, 2025: The contractor will continue to work on the pipe repair and replacements throughout the project. Work on the turn lane widening at the intersection of S.D. Highway 47 and Bureau of Indian Affairs #10 will begin in the next couple weeks. Construction of the south box culvert is also expected to begin. 

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March 28, 2025 - Press Release: 

Preliminary construction work has begun on S.D. Highway 47 from Iona to Fort Thompson. This project will consist of asphalt concrete surfacing, pipe repair, and box culvert replacements.

This preliminary work will be completed utilizing shoulder closures as well as flaggers and a pilot car. The traveling public is asked to be alert through the work zone for workers and construction vehicles. Once preliminary work is completed, two box culverts will be replaced on Highway 47 followed by cold milling operations. 

STATEWIDE CONSTRUCTION PROJECTS PAGE

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