Update: Overnight closures of northbound I-35/eastbound I-80 rescheduled for Nov. 14

DES MOINES, Iowa — Nov. 12, 2026 — If you drive on Interstate 35/80 between the Southwest Mixmaster and Iowa 141, be aware that previously scheduled overnight road closures have been rescheduled and may slow down your trip, according to the Iowa Department of Transportation’s Grimes Construction office.

Our construction crew needs to reconfigure the northbound I-35/eastbound I-80 lanes by shifting traffic. The closure originally scheduled for Friday, Nov. 13, has been rescheduled to Saturday, Nov. 14, to complete the traffic shift.

Wednesday, Nov. 11, and Thursday, Nov. 12

• Full closure of northbound I-35/80 between Southwest Mixmaster and Iowa 141 Interchange from 10 p.m. to 4 a.m.
• Prep work to layout markings for traffic shift

Saturday, Nov. 14 (Rescheduled)

• Full closure of northbound I-35/80 between the Southwest Mixmaster and the Iowa 141 Interchange from 7 p.m. Saturday to 10 a.m. Sunday, Nov. 15.
• Complete traffic shift.

Drivers should follow the marked detour. It sends drivers east on I-235 to Valley West Drive (Exit 1B), NW 100th Street and NW Urbandale Drive to reach eastbound I-80/northbound I-35.

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://511ia.org/help/section/how-to-create-and-manage-a-511-account.html.

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For questions about this project contact Kasi Province, Grimes construction office, at 515-986-2863 or [email protected].

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