GRIMES, Iowa – May 21, 2026 – If you drive on Interstate 35/I-80 between the Southwest Mixmaster and Iowa 141 you need to be aware of overnight road closures that may slow down your trip, according to the Iowa Department of Transportation’s (DOT) Grimes Construction office.
For crews to set overhead trusses on the interstate, northbound I-35/eastbound I-80 will be closed to traffic beginning at 10 p.m. on Tuesday, May 26. The closure will last until 4 a.m. on Wednesday, May 27. If weather causes a delay, it will take place starting at 10 p.m. on Wednesday May 27.
For crews to set a truss over southbound I-35/westbound I-80, the closure will take place on Monday night June 1, starting at 10 p.m. and ending by 4 a.m. Tuesday, June 2.
Please follow the marked detour route shown here during the closure:
Visit the Iowa DOT website at https://iowadot.gov/dsminterstates/Hickman-Road-Interchange/Hickman-Road-Interchange-Construction for additional information about construction at the U.S. 6/Hickman Road interchange.
The Iowa DOT reminds motorists to drive with caution, obey the posted speed limit and other signs in the work area, and be aware that traffic fines for moving violations are at least double in work zones. As in all work zones, drivers should stay alert, allow ample space between vehicles, and wear seat belts.
The latest traveler information is available anytime through our 511 system. Visit 511ia.org; call 511 (within Iowa) or 800-288-1047 (nationwide); stay connected with 511 on Facebook or X (find links at https://iowadot.gov/travel-tools/iowa-511/511-social-media-sites); or download the free app to your mobile device.
It’s easy to subscribe to Your 511 and sign up to receive email/text alerts. Visit https://new.511ia.org/#login to sign up. For instructions and help with this feature, visit https://www.511ia.org/help/section/how-to-create-and-manage-a-511-account.html.
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For general questions about this project contact Kasi Province, Grimes construction office, at 515-986-2863 or kasi.province@iowadot.us.
2300 SE 17th St.
Grimes, IA 50111