Ohio Rev. Code § 5540.15
The department of transportation shall undertake a demonstration project to study, develop, and demonstrate ways to facilitate public-private cooperation and flexibility in financing, constructing, maintaining, or operating transportation projects. In so doing it shall take all steps necessary and appropriate to facilitate the efforts of a transportation improvement district established in accordance with this chapter for the expeditious completion of the Butler county regional highway, the Allen road interchange, and the State Route 747 expansion in Butler county. Such steps may include advising and providing technical assistance to the district, and may also include designating the county engineer to serve as the department's agent to review project designs and determine if they meet state and federal specifications.
R.C. §5540.15