Iowa DOT News Release

Temporary closure of Iowa 12 from Plymouth County roads C-38 to K-18 to begin Monday, July 18

Posted on: July 13, 2022

SIOUX CITY, Iowa – July 13, 2022 – A culvert replacement project on Iowa 12 one mile north of Plymouth County Road K-18 requires closing the roadway to traffic from Plymouth County roads C-38 to K-18 for 3 weeks beginning on Monday, July 18, weather permitting, according to the Iowa Department of Transportation’s District 3 Office. 

During this project, Iowa 12 traffic will be detoured onto Plymouth County roads C-38 and K-18.

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; call 511 (within Iowa) or 800-288-1047 (nationwide); stay connected with 511 on Facebook or Twitter (find links at; or download the free app to your mobile device.

It’s easy to subscribe to Your 511 and sign up to receive the email/text alerts. Visit to sign up. For instructions and help for this feature, visit


Contact: Dakin Schultz at 712-274-5837 or

Iowa highway in the evening