Ohio Rev. Code § 5553.27
If the road which a landowner proposes to turn or change as provided in section 5553.23 of the Revised Code is located in two or more counties, he may file his petition with the board of county commissioners of either county. Such board shall within ten days thereafter cause a copy of said petition to be certified to the boards of the other counties interested and shall at the same time fix a time not later than thirty days for a hearing upon such petition. Such proceedings shall be had before the joint board of county commissioners as are provided for in proceedings had before a single board. The joint board at its first meeting shall require the petitioner to file a bond to cover the costs of the proceeding and the expense of the proposed change in such road.
R.C. §5553.27