Ohio Revised Code Title VII. Municipal Corporations § 711.19

If the petitioners for the alteration or vacation of a plat under section 711.17 of the Revised Code produce to the court of common pleas satisfactory evidence that notice has been given as required by section 711.18 of the Revised Code, and that two thirds of the persons owning lots or parts thereof in a municipal corporation, part thereof, or addition thereto, or their authorized agents or attorneys, have made application to have the whole or a part of such municipal corporation or addition altered or vacated, the court may proceed to so alter or vacate. The vacation of a municipal corporation, addition, or part thereof, shall not vacate any part of a state or county highway.