805 ILCS 25/3
Such corporation shall have power
FirstTo make such examination and survey for the proposed works as may be necessary to the selection of the most advantageous route, and for such purpose may enter, by its officers, agents and servants, upon the land of any person or corporation, but subject to responsibility for all damage caused thereby.
SecondTo construct its levee, canal or tunnel across or under any stream of water, waterway, highway, road, street or railroad, which the route of such levee, canal or tunnel shall intersect or touch; but such corporation shall restore the stream, waterway, highway, road, street or railroad thus intersected or touched, to its former state, or to such state as not to have impaired its usefulness, and shall keep such crossing in repair: Provided, however, That nothing in this act shall be construed or held to authorize the permanent obstruction of any navigable stream or waterway.
805 ILCS 25/3