605 ILCS 5/9-105
In constructing a public highway, if a ditch is made at the junction of highways, or at the entrance of gates or other openings of adjoining premises, the highway authorities shall construct good and sufficient culverts or other convenient crossings. New entrance culverts or crossings or additions to existing entrance culverts or crossings along an existing public highway or street where there is a ditch may be made with the consent of the highway authorities, provided the applicant for such entrance culvert or crossing constructs at the applicant's expense a good and sufficient culvert or other convenient crossing of the type and size specified by the highway authorities, which structure shall then become the property of the public.
605 ILCS 5/9-105