U.S. Highway 16A - From two miles east of Custer to Jct. S.D. Highway 36
Project Summary:
The project consists of the replacement of various pipe culverts on U.S. Highway 16A that have exceeded their useful life. Additional work on the project includes removing and replacing existing asphalt surfacing, repairing in-slope erosion adjacent to the highway, and improving the intersection of U.S. Highway 16A and Wildlife Loop Road.
The project also consists of the replacement of a concrete arch culvert that has exceeded its useful life.
Project Updates:
July 27, 2026:
Anticipated Work: July 26, 2026 – Aug. 21, 2026: The contractor only has new sign installations, permanent seeding and miscellaneous cleanup remaining. No work will be performed during the Sturgis Motorcycle Rally from Aug. 1-16, 2026, or during Custer State Park's Buffalo Roundup from Sept. 22-27, 2026.
June 27, 2026 – July 25, 2026, Completed Work: Guardrail and pavement markings have been installed.