Ohio Rev. Code Ann. § 5591.13

The land or property required to make the alteration in a street or highway necessitated by a proposed improvement as provided in sections 5591.03 to 5591.17, inclusive, of the Revised Code, and as shown in the plan, specifications, and contract, or required to make any alteration in the railroad necessitated by the proposed improvement shall be purchased or appropriated by the county or the railroad in the manner as provided in sections 163.01 to 163.22, inclusive, of the Revised Code.