Overnight Closures of Northbound I-35 from Northeast 36th Street to U.S. 30 for Shoulder Widening Begin May 10

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ANKENY, Iowa – May 8, 2026 – If you drive north on Interstate 35 between Ankeny and Ames, you need to be aware of overnight closures for northbound traffic from Northeast 36th Street (Exit 94) up to U.S. 30 (Exit 111), according to the Iowa Department of Transportation’s (DOT) Marshalltown construction office.

Northbound I-35 will be closed nightly on Sunday and Monday, May 10 and 11, from 9 p.m. to 5 a.m., weather permitting, for shoulder widening work.

When the interstate is closed, follow the marked detour route:

  1. Exit northbound I-35 at Northeast 36th Street (Exit 94).
  2. Travel west on Northeast 36th Street to U.S. 69.
  3. Travel north on U.S. 69 to U.S. 30 in Ames.
  4. Travel east on U.S. 30 to return to northbound I-35 (Exit 111).
Northbound I35 Ankeny to Ames Detour Map

Northbound I35 Ankeny to Ames Detour Map

The northbound I-35 rest area will be closed to the public beginning at 10 a.m. on Sunday morning, May 10. The rest area will not reopen until 5 a.m. on Tuesday morning, May 12.

Visit 511ia.org for current detour route information before traveling through this construction zone and pay attention to detour signs and message boards while driving.

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 Iowa DOT’s 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.

Subscribe to Your 511 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 information about this project, contact Dustin Skogerboe, Iowa DOT Marshalltown construction office, at 641-752-4657 or dustin.skogerboe@iowadot.us.