Such statement shall then be signed by the county auditor in the presence of two (2) attesting witnesses and be duly acknowledged by him, and shall then be duly filed and recorded by the county recorder of such county. The amount which each tract of land and each public or corporate road, or railroad, will be liable for and the interest thereon as hereinafter provided, shall be and remain the first and paramount lien on such land, public or corporate roads or railroads until fully paid, and shall take precedence of all mortgages, charges, encumbrances or other liens whatsoever. Such payments may be made as hereinafter provided. Such findings shall be deemed notice to all parties interested of the existence of such lien. The fees of such county recorder for such recording shall be paid by the county on the allowance of the board of county commissioners and said statement after the same has been recorded shall be returned to the county auditor to be by him placed with the other papers relating to such project and carefully preserved by him.