(605 ILCS 5/3-108) (from Ch. 121, par. 3-108)
    Sec. 3-108. Any highway constructed as a federal aid highway under the provisions of the Federal Aid Road Act shall be a part of the State highway system unless, under the provisions of Section 3-104 or 3-104.1 or similar provisions of this Code, there is an agreement or provision made for its maintenance by the county or municipality, in which case it shall be a part of the county highway system or municipal street system.
(Source: P.A. 77-1409.)