South Dakota Department of Transportation

SD11 & SD115 Corridors Study

Lincoln County, SD

As the population in Sioux Falls, Harrisburg, and Lincoln County continues to climb due to job opportunities and development bringing families to the area, a need to study two Northern Lincoln County Corridors (SD11 & SD115) was identified by the South Dakota Department of Transportation (SDDOT), City of Sioux Falls, City of Harrisburg and Lincoln County. Growth in this area accounts for approximately half of the state’s estimated population growth. As a result, there are numerous infrastructure projects occurring concurrently, including new schools, the completion of the southern segment of Veteran’s Parkway, and many other infrastructure developments.

The SDDOT selected Benesch to perform a corridor planning study for a portion of the SD Highway 11 (SD11) and SD Highway 115 (SD115) corridors in Lincoln County, South Dakota. Our team has progressed through the review and analysis of the corridor and is currently refining the conceptual improvement options and evaluating feasibility. Our second public meeting is scheduled for November 9, 2022, and the study will wrap up soon after with programming recommendations for the necessary improvements.

Project highlights

  • Accommodate growth within Lincoln County
  • Determine the ultimate roadway section for both corridors
  • Identify needs for traffic signals and/or turn lanes
  • Provide access management
  • Perform an environmental review
  • Develop a Long-Range Plan for SD11 and SD115 that includes projects, estimated costs and schedule