Duties of the Commissioner include:
- Responsibility for the necessary engineering studies, surveys, plans and cost estimates for highway construction
- Care and maintenance of county road equipment, supplies, records and provides an itemized statement of all expenditures to the County Board
- Plans and supervises highway maintenance activities and works with other municipal officials concerning highway matters
The Highway Department performs all the maintenance and construction work on the County Trunk Highway system.
The Highway Department provides for the general maintenance of the State Highway under contract with the State and provides maintenance and construction work on local roads and streets under agreements with the various local municipalities.