Chamberlain - S.D. Highway 50

Project Summary: 

This project is a 4-mile grading, surfacing, and landslide repair project on SD Highway 50 at Chamberlain. The project extends from K Street to I90 and is separated into multiple phases.

The first construction phase will be from the railroad bridge in Chamberlain to Sorenson Drive and will consist of landslide repair, roadway grading, and asphalt surfacing. When completed, the surfacing will be 4 lanes wide. This work is expected to be completed in late September.

The second phase will be from Sorenson Drive to I-90, and will consist of shoulder widening and asphalt surfacing. When completed, this section will be 3 lanes wide (one lane in each direction with a center turn lane) and 8’ wide shoulders. This work is planned for September through November.

The third phase is on Main Street from K Street to the American Creek bridge, and on Courtland Street from Main Street to King Street. The work in this area will consist of milling and overlaying the existing asphalt surfacing. This work is planned for late September or early October.

Work remaining for 2022 consists of pavement reconstruction at Sorenson Drive, and paving the top lift of asphalt from the railroad bridge near Paul Gust Road to I-90. 

Traffic will be maintained throughout the project with a combination of lane closures and flagger/pilot car operations.

Project Timeline: 

The contractor plans to start work during the week of April 4 and complete this work on May 13.

Press Releases: 

June 22, 2021

Project Updates: 

The contractor has nearly completed the slide repair portion of the project and the reconstruction on HW 50 from the railroad bridge East. The contractor has also nearly completed the asphalt surfacing on the project. The shoulder widening portion is now completed and has the final lift of asphalt surfacing on it. The asphalt surfacing on the city section is completed. The contractor has started the dirt and base work at the intersection of Sorsen Drive. Schedule it to complete the base and asphalt work on the intersection the first part of May 2022. The final lift of asphalt surfacing is scheduled to be completed the middle of May 2022.

Loiseau has completed the grading work on SD50 and Commercial Asphalt has begun paving asphalt. If the weather cooperates, asphalt paving operations should be completed by 05/13/22. Rumble strips, pavement marking, and permanent signing will be installed in the last several weeks on May.


Project Photos:

Future photos will be listed here. 

Project Contract Amount:

$11 Million


Project Contacts: 

Contractor: Loiseau Construction, Inc; Flandreau, SD

Project Engineer: Caleb Horstman (605) 995-3346
Engineering Supervisor: Travis Holthaus (605) 995-3341


PCN: 6953

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