U.S. Highway 81 Through Yankton

Project Summary:

U.S. Highway 81 - From S.D. Highway 50 to 23rd Street in Yankton

• Signal Modification
• Intersection Reconstruction
• Sidewalk Improvements with Accessibility Improvements

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Project Timeline:

March 2026 - Fall 2026

Project Updates:

March 4, 2026 - Press Release: 

An intersection modification and traffic signal project has begun on U.S. Highway 81 (Broadway Avenue) in the City of Yankton. Work on the project includes traffic signal upgrades, ADA (curb ramp) upgrades, and intersection modifications on Highway 81 (Broadway Avenue) at the intersections of 4th Street, 8th Street, 10th Street, 15th Street, 21st Street, 23rd Street, and 31st Street within the City of Yankton. During the week of March 2, 2026, traffic signal work began at the 8th Street and 21st Street intersections of Highway 81 (Broadway Avenue).
 
As work is completed at one intersection, the project will advance to the next intersection on the Broadway Avenue reconstruction project. As footing construction is completed at an intersection, the intersection modification, curb ramp upgrades, and signal modification will follow. The center turn lanes at the intersection of 4th Street and Broadway Avenue will be reconstructed to realign the left turn lanes to be directly across from each other to improve sight distance and improve safety for turning traffic.
 
Temporary traffic signals and lane closures will be used to maintain traffic through the work area. Pedestrians will be detoured through and around the work zones as needed. The traveling public is asked to be alert through the work zone for longer queues of traffic, construction vehicles entering and exiting the work zones, and for workers adjacent to moving traffic. 

STATEWIDE CONSTRUCTION PROJECTS PAGE

PCN: 07DH