Overnight Closure of Southbound I-35 from U.S. 30 to 126th Avenue for Overhead Bridge work at 158th Avenue Begins May 27

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HUXLEY, Iowa – May 22, 2026 – If you drive south on Interstate 35 between Ames and Ankeny, you need to be aware of an overnight closure for southbound traffic from the U.S. 30 interchange (Exit 111) to the 126th Avenue interchange (Exit 96), according to the Iowa Department of Transportation’s (DOT) Marshalltown construction office.

Southbound I-35 will be closed at 10 p.m. on Wednesday, May 27, until 5 a.m., Thursday, May 28, weather permitting.

When the interstate is closed you will follow a marked detour route:

  1. Exit southbound I-35 at U.S. 30 (Exit 111).
  2. Travel west on U.S. 30 to U.S. 69.
  3. Travel south on U.S. 69 to 126th Avenue
  4. Travel east on 126th Avenue to return to southbound I-35 (Exit 96).
SB I-35 US 30 to 126th Ave Detour Map

SB I-35 US 30 to 126th Ave Detour Map

The southbound I-35 rest area will be closed to the public beginning at 10 a.m. on Wednesday morning, May 27. The rest area will not reopen until 5 a.m. on Thursday morning, May 28.

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.