The Engineering Department is responsible for all work related to construction of Polk County highways, bridges, and the township bridge program. This includes:

  • Construction inspection
  • Design
  • Permitting
  • Project administration
  • Right-of-way
  • Surveys

Construction Costs

Polk County spends approximately $3.5 million a year in construction on its County State Aid Highway system and currently $0 on its local County Road system. Polk County administers approximately $500,000 to $1.5 million in township bridge replacements yearly.

Project Information

The Project Information Link includes all projects for Polk County that are in Bidding, in Construction, or in Planning. 

You will also find the status of the current construction projects.

Go to the Project Information website.

Five-Year Construction Plan

The Five-Year Construction Plan is updated once a year. This update involves adding a year to the program as well as updating or revising the other years within the program. View the 2019 Five-Year Plan (PDF).

Road Construction Maps


Permit applications for Polk County are completed online through the Public Works Department. The following link will be used for permits regarding Park, Utility, Transportation and Right-of-Way / Access.

Visit the Permit Application page.

For questions regarding the online permitting tool, please call the office at 218-281-3952 for assistance.