Ohio Rev. Code § 4957.36
The exception in section 4957.35 of the Revised Code does not apply to the structures named in such section when built over the main tracks of railroads. In cases in which it is allowed, the public utilities commission shall file in its office a written statement of the facts upon which it relied in finding the required construction impracticable. Such clearances over and adjacent to railroad tracks in terminals may be used as the commission approves. When a railroad, union depot, or terminal company, severally or jointly, determines to install an electrification system for the operation of cars, locomotives, or trains on their lines or parts thereof, such railroad, union depot, or terminal company, severally or jointly, may, with the approval of the commission, fix such clearances for the necessary wires, conductors, appurtenances, and their supports for such electrification system as are practicable for construction and operation and consistent with the clearances of structures over or adjacent to the lines or parts thereof to be electrified.
R.C. § 4957.36