The Chickasaw Turnpike, also designated State Highway 301 (SH-301), is a controlled-access toll road in the rural south central region of the U.S. state of Oklahoma. A two-lane freeway, it stretches for 13.3 miles (21.4 km) from north of Sulphur to just south of Ada. The Oklahoma Turnpike Authority (OTA) owns, maintains, and collects tolls on the turnpike. The first section of the Chickasaw Turnpike opened on September 1, 1991.