70 ILCS 605/6-4
The commissioners may contract with highway authorities or with any person, firm or corporation operating a railroad, to construct or maintain a levee or levees, or any portion thereof, upon such terms as may be for the best interests of the district, and may grant to such highway authorities or such person, firm or corporation operating a railroad the right to construct, operate and maintain a highway or railroad upon, along or across such levee or levees. The commissioners may also contract with highway authorities or with any person, firm or corporation operating a railroad to use any embankment, or any part thereof, constructed by such highway authority or by such person, firm or corporation as a district levee or as a part of the levee system of the district. Any such contract shall be subject to approval by the court, after hearing, either without notice or upon such notice as the court may direct.
70 ILCS 605/6-4