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Iowa DOT has scheduled overnight closures of westbound I-80 from the Southwest Mixmaster to Grand Prairie Parkway (Exit 118) for five nights: Sunday, Oct. 4, through Thursday night, Oct. 8, with the final closure ending Friday morning, Oct. 9. The announced hours are 8:30 p.m. to 5 a.m., weather permitting. Westbound ramps at the Southwest Mixmaster, 60th Street (Exit 122) and Jordan Creek Parkway (Exit 121) are also included. Drivers should expect delays.

When and where is westbound I-80 closed?

The Iowa DOT schedule covers five overnight work windows, beginning Sunday night, Oct. 4, 2026, and ending Friday morning, Oct. 9. Each is scheduled from 8:30 p.m. until 5 a.m. the following morning, weather permitting. The closure is westbound only, on I-80 between the Southwest Mixmaster and Grand Prairie Parkway at Exit 118; the notice does not announce a closure of eastbound I-80.

The westbound entrance ramps at the Southwest Mixmaster, 60th Street (Exit 122) and Jordan Creek Parkway (Exit 121) are included. Iowa DOT says crews will perform grading and concrete pavement work. The department has not published an estimated detour distance or additional travel time.

What detour should drivers follow?

The marked detour directs drivers to use University Avenue and Grand Prairie Parkway to return to westbound I-80 at Exit 118. Follow posted detour signs, since conditions and routing can change. Iowa DOT has not specified a travel-time estimate or detour mileage.

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How to check whether the closure is in effect

The dates and hours are a schedule, not confirmation that work is proceeding as announced. Weather may affect the work, so check Iowa DOT’s 511 Iowa traveler-information service shortly before departure for current closures and routing:

  • 511ia.org
  • Call 511 within Iowa.
  • Call 800-288-1047 from outside Iowa.
  • Use Iowa DOT’s free app.

Check for a separate 60th Street ramp restriction

A separate Iowa DOT notice issued June 25 announced a closure of the westbound I-80 entrance ramp at 60th Street from July 6 until Nov. 26, weather permitting. That notice gives a detour north on 60th Street, west on University Avenue, then south on Grand Prairie Parkway to westbound I-80 at Exit 118. Because the announced period overlaps the October overnight closure schedule, check 511 Iowa for the ramp’s current status before traveling.

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Work-zone safety

Iowa DOT advises drivers to obey posted work-zone speeds and signs, stay alert, leave space between vehicles and wear seat belts. The department’s notice says moving-violation fines in work zones are at least double.

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