The board of county commissioners of any county bordering Lake Erie may construct, open, enlarge, excavate, improve, deepen, straighten, or extend any harbor located in whole or in part within such county, and within the corporate limits of a municipal corporation having an aggregate tax duplicate of less than five hundred million dollars, and any such work shall be a permanent improvement within section 133.15 of the Revised Code. Such authority shall not be exercised, nor shall any proceeding for the submission of the question of issuing bonds for the work be taken, until the legislative authority of such municipal corporation, by resolution, has consented thereto.