On-Ramp Closure Planned for Sioux Falls I-29 Diverging Diamond Project
The next phase of an ongoing major road construction project in Sioux Falls is going to temporarily close an on-ramp in the area.
The closure will be in effect for approximately six weeks for grading and paving work. Detours will be in place to guide motorists to the 26th Street exit via Marion Road and Louise Avenue.
Also during that time, crews will begin sanitary sewer installation along the south side of 41st Street. This work should take about a week.
During this time there will be single-day closures at the intersections of 41st Street and East Empire Place and 41st Street and West Empire Place. One intersection will remain open at all times for motorists while this work is completed.
The work is all part of the 41st Street Diverging Diamond Interchange Project, which has been underway at the I-29 interchange since April of last year.
When it's completed by June of 2024, the new interchange will increase traffic flow in the area and reduce the number of accidents getting on and off the interstate.
The project's website describes a diverging diamond interchange as:
The DDI resembles a conventional diamond interchange. Drivers make right turns at a DDI just as they would at a regular diamond interchange. Drivers who want to turn left cross over to the left side of the road and then make their left turn. Because traffic is on the left side of the road between the crossover points, all left turns occur without having to cross opposing traffic.