High Quality Content by WIKIPEDIA articles! The Oklahoma Turnpike Authority (formerly Oklahoma Transportation Authority, and before that originally the Oklahoma Turnpike Authority) is a government agency of Oklahoma that deals with issues regarding the Oklahoma turnpike system. Under the supervision of the Oklahoma Secretary of Transportation, the Authority`s mission statement is to "construct, operate, and maintain a safe and economical turnpike system for the convenience of customers". Along with the Oklahoma Department of Transportation, the Authority is the primary infrastructure construction and maintenance agency of the State.