Public Involvement Projects

Proposed bridge replacement on U.S. 18, near Cylinder, over Prairie Creek in Palo Alto County

About the Project

Project description

The Iowa Department of Transportation is requesting public input for proposed bridge replacement on U.S. 18, near Cylinder, over Prairie Creek, 2.8 miles west of the west junction of Iowa 15 in Palo Alto County. The proposed project involves replacing the existing 60’ x 30’ continuous concrete slab bridge with a triple 12’ x 8’ x 108’ reinforced concrete box culvert.

Construction of the project is expected to begin in 2024.

Through traffic on U.S. 18 will be detoured using Palo Alto County Road 370th Street, N-60, B-20 and Iowa 15.

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Find this project on our REACH app, which allows you to easily comment on projects and quickly register for public meetings.

Project contact

Shane Tymkowicz, P.E., Assistant District Engineer
Iowa DOT District 3 Office
2800 Gordon Drive
Sioux City, IA 51102
712-274-5834 or 712-261-0405

Comments and questions regarding the online meeting should be received by April 11, 2022. To submit a comment or question regarding this project, go to:

We are piloting REACH a mobile web app that gives you a new way to stay involved and interact with Iowa DOT projects. Create your REACH account at this link:, use the REACH app to easily submit comments, register for public meetings or view the “At Your Own Pace” online meetings without logging into the system again. Because it’s optimized for use on a mobile device, commenting and keeping up to date on Iowa DOT projects will be more convenient than ever.


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