Another Ramp Closure Coming to I-29/41st Street Project
The latest in a series of closures and detours associated with a massive road construction project in Sioux Falls will temporarily close an off-ramp from Interstate 29 to 41st Street.
Thursday (September 14) at 6:00 AM, the southbound off-ramp at Interstate 29 (exit 77) at 41st Street is scheduled to close for grading and paving work. That ramp is expected to reopen later that afternoon.
About that same time Thursday afternoon, the I-29 northbound on-ramp at exit 77, which has been closed for grading and paving work, is scheduled to reopen.
A much longer closure is coming later in the week.
Friday (September 15), the northbound I-29 off-ramp at exit 77 will close until November 1, 2023. Detours will be in place to guide motorists to the 26th Street exit via Marion Road and Louise Avenue.
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.