By the end of the day on Friday, Oct. 31, 2025, all four lanes of U.S. Highway 81 (north of Yankton) are scheduled to be opened to traffic. The contractor is currently completing the pavement markings.
Motorists should stay alert for equipment and workers in the area to complete project clean-up and to install signage. Lane closures within the project area will be needed intermittently to complete remaining work.
This multi-year project extended the four-lane divided highway north of Yankton on Highway 81. Additional project information is available at https://dot.sd.gov/yankton81.
You can always check on construction updates and road conditions by viewing this map on the South Dakota Department of Transportation website.