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Iowa 175 bridge replacement in Monona County

About the Project

The Iowa Department of Transportation is requesting public input for a proposed replacement of the Iowa 175 bridge over Maple River, 1.1 miles west of the east junction with Iowa 141. The project includes replacing the existing 240’ x 26’ steel beam bridge with a 299’ x 44’ pretensioned prestressed concrete beam bridge. New bridge approaches will be constructed, and new guardrails installed, and shoulders will be paved 20’ beyond the ends of the guardrails.

Construction of the project is expected to begin in 2022.

Through traffic on Iowa 175 would be detoured during construction using Monona County Roads E-34, L-32, and Iowa 141.


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Project contact

Shane Tymkowicz, P.E., assistant district engineer
Iowa DOT District 3 Office
2800 Gordon Drive
Sioux City, Iowa 51102
Phone: 712-276-1451 or 800-284-4368
Email: shane.tymkowicz@iowadot.us

Deadline for receipt of comments is June 25, 2020; however, all correspondence received after this date will be included in the project files and reviewed as the project is developed. To submit a comment online about this project, go to: https://bit.ly/iowadot3324.


Iowa bridge