Iowa DOT News Release

Changing traffic patterns on U.S. 75 north of Merrill in Plymouth County begin June 4 #iatraffic

Posted on: May 17, 2018

SIOUX CITY, Iowa – May 17, 2018 – A reconstruction project to grade and replace pavement on U.S. 75 in Plymouth County from north of Merrill to south of Le Mars requires closing the northbound lanes and shifting traffic to a head-to-head traffic pattern in each direction on the existing southbound lanes beginning at 8 a.m. Monday, June 4, until Tuesday, Sept. 4, weather permitting, according to the Iowa Department of Transportation’s District 3 Office.

Traffic impacts

  • Plymouth County Road C-38 will be closed at the intersection with U.S. 75 and will reopen after construction is complete.
  • Traffic on Plymouth County Road C-38 will be detoured around the closure at U.S. 75.

Cedar Valley Corp. was awarded the $8.2 road construction project.

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.

To receive email or text alerts about traffic incidents, road closures, traffic delays, and other restrictions that affect this highway route or other routes you travel, the Iowa DOT offers the “Your 511” option on It’s easy to subscribe to Your 511 and sign up to receive the email/text alerts. Visit for simple, step-by-step instructions.


Contact: Dakin Schultz at 712-274-5837 or

Iowa highway in the evening