SIOUX CITY, Iowa – July 22, 2025 – If you drive on Interstate 29 through Sioux City you need to be aware of an upcoming paint marking project that may affect your trip, according to the Iowa Department of Transportation’s District 3 office.
Beginning at 7 p.m. on Thursday, July 24, weather permitting, crews will be closing one ramp at a time, starting at the 1st Street interchange in Sergeant Bluff. Crews will then work north towards each interchange before reaching the South Dakota border.
You will be directed by portable messages signs during the ramp closures. Signs will be in place on the morning before the night that the work is scheduled to begin. Only one ramp will be closed at a time on I-29. Painting will take place on weeknights from 7 p.m. until 6 a.m.
This project is expected to be completed by mid-August.
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.
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For general information about this closure, please contact Sarah Tracy, District 3 transportation planner, at 712-274-5831 or sarah.tracy@iowadot.us.