On this page...
Upcoming Traffic Changes
- Ramp Openings: Douglas NB Off Ramp on 8/19, Hickman SB On Ramp on 8/25, and University SB Off Ramp also on 8/25.
- Ramp Closures: Both Douglas SB On Ramps and the Hickman SB Off Ramp closures begin on 8/27 and last through mid-December.
* These openings and closures may happen late at night and affect traffic the following day.
Back to topAbout the Project
What: Replacement of the interchange at Interstates 80/35 and Hickman Road.
Why: Data shows that traffic volume in this area is projected to increase nearly 35 percent by 2042. The updated interchange will improve traffic flow and increase safety.
How: A diverging diamond configuration, similar to the interchange update in Ankeny at I-35 and 1st Street, will be constructed to increase safety. We’ll also be adding lanes to Hickman Road and adding lanes on I-35/80 from University to Douglas. Learn more about Diverging Diamond Interchanges.
When: All the design work has been completed and the project was awarded to United Contractors in July 2024. Construction began shortly after that. This is a multi-year project that is expected to be finished in 2028.
Project Budget: $94 million
Back to topLong Term Detours
Visit Iowa DOT News to find detour information for closures lasting less than a week.
Southbound Ramp Closures at Douglas and Hickman
Beginning on Wednesday, August 27, 2025, the SB I-35/WB I-80 Douglas Avenue on ramps (both) and the Hickman Road off ramp will be closed. These closures are expected to last through the end of 2025. Please see map below for the detour route.
Northbound Ramp Closures at University and Hickman
Beginning on Wednesday, September 3, 2025, the NB I-35/EB I-80 University Avenue on ramp and the Hickman Road off ramp will be closed. These closures are expected to last through the end of 2025. The NB I-35/EB I-80 Hickman on ramp is nearing completion and is expected to be open in the next few weeks. An exact date is not known at this time. Please see map below for the detour routes.
Greenbelt Trail
Beginning October 1st, the Greenbelt Trail will be closed where it crosses under I-35/80. The bridge is being reconstructed and it is important to keep the work zone clear for everyone’s safety.
Two detours are in place during the closure:
- The first will take you south to University Avenue, then north on NW 114th Street to get back on the trail heading east.
- The other option goes north along the Timberline Park Trail to the Douglas Avenue Trail. Follow that trail east to 100th Street and then go south to get back on the trail.
Photo Gallery
Hickman Interchange Construction
Planning Images
Pedestrian, storm water, and landscaping details
Bridge/Retaining Wall and proposed aesthetics and landscaping
Iowa 511
Real-time updates about weather-related road conditions, construction, commercial vehicle restrictions, road closures, and other events that impact traffic in Iowa.