05/29/2026
Planning a trip to Custer State Park in the next couple weeks? We’ve got good news… the park is OPEN and summer adventures are waiting for you!
However, Travelers on Highway 16A should plan for possible delays due to road construction, so a little extra patience (and maybe an extra snack) may be helpful during your visit.
The silver lining? Some of the park’s most iconic drives are construction-free:
✔️ Needles Highway
✔️ Iron Mountain Road
✔️ Wildlife Loop Road
This might just be the perfect excuse to slow down, take the scenic route, and explore more of the park beyond the main highway. From granite spires and mountain tunnels to bison herds and prairie views, there’s plenty of adventure waiting off the beaten path.
Thank you for your patience, and we can’t wait to see you in the park!
Click on the link below for more information on the construction project.
https://www.facebook.com/share/p/1EPWNjSddL/
Beginning Monday, June 1, 2026, asphalt paving will begin on the U.S. Highway 16A mainline in Custer State Park. Pilot cars and flaggers will be used. Motorists should expect delays. The 13 miles of mainline asphalt overlay paving will run from the Custer State Park east entrance to the west entrance. Paving is tentatively scheduled for completion on Wednesday, July 1, 2026.
Crews will not be working on the project over the Fourth of July holiday weekend. Following the holiday weekend, crews will apply a flush and sand seal to the same 13 mile stretch. This operation is expected to be complete by Saturday, July 11, 2026.
After asphalt paving operations are finished, new guardrail will be installed. It will take approximately three weeks to complete.
Current work consists of multiple pipe culvert replacements and backfilling two box culverts. These operations use temporary traffic signals and flaggers.
The primary contractor for this $15.6 million project is Paul Reed Construction & Supply, Inc. of Gering, NE. The overall project completion date is Friday, Oct. 30, 2026.
During this reconstruction project, access is available to all Custer State Park amenities.
Featured Project Information:
Find additional information, construction timelines, and project maps on the SDDOT website at https://dot.sd.gov/custer-16A/.
For the latest on road and weather conditions, road closures, construction work zones, commercial vehicle restrictions, and traffic incidents, please visit https://sd511.org or dial 511.