About LaSalle County Highway Department

About Us

Duties and Responsibilities

The LaSalle County Highway Department is responsible for the planning, design, construction, and maintenance of 363 miles of county highways, 79 major bridges and numerous drainage structures. In addition, the Highway Department provides technical assistance to all 37 Township Highway Commissioners and is the lead agency for township projects constructed or maintained with Motor Fuel Tax funding.

The staff also works closely with local citizens and agencies, as well as with the Federal Highway Administration, the Illinois Department of Transportation, and the various municipalities throughout the county.

Highway Committee

The Committee investigates and reports on all matters concerning highways or the operation of the Highway Department. Prepares and recommends a long range and one year plan for improvement of the County Highway System, and supervises the expenditure of County Highway Funds. For more information on the Highway Committee

Source and Use of Funds

There are four main sources of funding used to finance the programs and activities of the Highway Department. They are federal funds, state funds, county property tax, and reimbursements from other taxing bodies such as townships and municipalities. Detailed outline of funding

2024 Improvement Plans

County Highway
Township Highway
Bridges and Culverts

2022-2027 Improvement Plan


2023 Annual Report


Township Officials of Illinois
Illinois Association of County Engineers
LaSalle County Main Page