The Ohio Turnpike use to have some mysticism to it. That died on October 1, 2009 (no jobs), when they installed E-Z Pass.
The Ohio Turnpike is a ticket system the entire length. Whenever there is a service plaza, it is located on both sides of the turnpike.
The Ohio Turnpike starts at the Indiana border. It comprises I80 and I90. West of Cleveland I90 splits from the turnpike. Near Youngstown, I80 becomes untolled and the turnpike continues on Pennsylvania as I76.