70 ILCS 2605/17
When it shall be necessary in making any improvements which any district is authorized by this Act to make, to enter upon any public property or property held for public use, such district shall have the power so to do and may acquire the necessary right of way over public property or such property held for public use in the same manner as is above provided for acquiring private property, and may enter upon, use, widen, deepen and improve any navigable or other waters, waterways, canal or lake; and the channel or bed of any river, water course or stream used by such district as an outlet for drainage, may be changed in order to straighten the same, if the capacity of the channel is maintained unimpaired: Provided, the public use thereof shall not be unnecessarily interrupted or interfered with. Provided, further, that before any work shall be started, plans for such proposed change or straightening of streams shall first be submitted to the Department of Natural Resources of the State for approval and a permit obtained therefor under the seal of the Director of the Department. Provided, further, that the district shall have the power to acquire by purchase or contract, but not by condemnation, existing sanitary facilities, including, but not limited to, drains, ditches, outlets, sewers and sewage treatment plants owned by any sanitary district, city, village, incorporated town or other municipal corporation, township or county.
Every such district may build suitable bridges with suitable approaches thereto, with roadways and sidewalks thereon for public travel across its main drainage channel on the line of Crawford Avenue, sometimes called Fortieth Avenue, in the City of Chicago, as extended across the main channel; and also on the line of California Avenue in the City of Chicago as extended across the main drainage channel; also on the line of Cicero Avenue, sometimes called Forty-eight Avenue, in the City of Chicago, as extended across the main drainage channel; and on the line of Harlem Avenue, sometimes called Seventy-second Avenue, as extended across the main drainage channel, all in the county of Cook; Provided, that such bridges shall be without center piers and shall otherwise conform to the requirements of the Federal government with regard to the width of the channel, clearance and other regulations designed to prevent interference with commerce. In building such bridges and approaches thereto, such district shall have the power to go beyond the limits of its own property, to build viaducts over or subways under public or private property or the right-of-way of any railroad, and to acquire by purchase, condemnation or otherwise, the necessary land, and to do all other things necessary to make access to any such bridge more convenient and practicable. Said bridges with approaches, roadways and sidewalks thereon shall be thereafter maintained in good order for public travel by any such district as a corporate expense, and no compensation shall be demanded or required to be paid any such district for its land necessarily taken to form part of a street or highway to afford access to any such bridge or as compensation for such bridges and their appurtenances as aforesaid: Provided, however, that if any such bridges with approaches, viaducts, subways, roadways and sidewalks thereon shall lie wholly within the territorial limits of any one municipality, then any such bridges with approaches, viaducts, subways, roadways, sidewalks and appurtenances shall on completion be turned over to the corporate authorities of any such municipality free of cost, and shall thereupon become the property of such municipality, and be maintained in good order for public travel by such municipality: And, provided, further, however, that if any land of such district or other land acquired by purchase, condemnation or otherwise is necessarily taken to form a part of a street or roadway leading to any such bridge, which land lies wholly within such municipality, or if such district shall enter into a contract with any such municipality for the dedication of the right of way for a street across or over any lands of such district adjoining such main channel for an approach, or roadway leading to any such bridge lying wholly within any such municipality, then such street shall become a part of the public highways of such municipality, and such municipality shall thereafter maintain such street and all parts and portions thereof and shall place any and all improvements that such municipality may deem necessary in such street without any cost or charge of any kind to the district.
70 ILCS 2605/17