Ohio Revised Code Title LV. Roads Highways Bridges § 5537.19

The Ohio turnpike and infrastructure commission shall expend such moneys as the commission considers necessary for studies of any turnpike project or infrastructure project, whether proposed, under construction, or in operation, and may employ consulting engineers, traffic engineers, and any other individuals or firms that the commission considers necessary to properly implement the studies.  The cost of the studies may be paid from revenues, eligible state and federal grants, state taxes available to the commission and permitted by law to be spent for such purposes, or the proceeds of bonds.