605 ILCS 115/4
No such consent shall be given unless the petitioner shall have given notice of his intended application in some newspaper published in the county, for at least four weeks, successively, next preceding the session of the county board at which the application is made; or, if no newspaper is published in such county, by posting notices in four public places therein, at least four weeks previous to such session. When the application is to several county boards, the notice shall be given in each county. At least four weeks' notice of such intended application shall be given in writing to the owners of the land adjoining to or embracing the water course over which such bridge is to be erected: Provided, that such written notice need not be given to any owner not residing in the state, or who cannot, upon due inquiry, be found.
605 ILCS 115/4