The Iowa Department of Transportation is requesting public input for proposed improvements on U.S. 20 from the U.S. 75/Iowa 12 Interchange in Sioux City to Little Whiskey Creek.

The proposed project involves grading and replacing pavement on U.S. 20 in the eastbound and westbound lanes.

Construction of the project is expected to begin in 2023.

Through traffic on U.S. 20 would be maintained at all times. For more information, see the website listed below.  

For general information or to make a comment regarding the proposed project, contact Shane Tymkowicz, P.E., assistant district engineer, Iowa DOT District 3 Office, 2800 Gordon Drive, Sioux City, Iowa 51102, phone 712-274-5834 or 712-261-0405, email

Comments must be received by October 7, 2021 to be considered.

Visit the Iowa DOT’s project-related public involvement event website at for information about scheduled public meetings and hearings, or view and offer input on any DOT project using the new “Map Search” feature. If you would like to receive future email notifications, or submit a comment or question regarding this project, go to: