West of Oklahoma City, it parallels and replaces old U.S. Interstate 40 ( I-40) is an Interstate Highway in Oklahoma that runs 331 miles (533 km) across the state from Texas to Arkansas. I-240 / Kilpatrick Turnpike in Oklahoma Cityīeckham, Washita, Custer, Caddo, Canadian, Oklahoma, Pottawatomie, Seminole, Okfuskee, Okmulgee, McIntosh, Muskogee, Sequoyah
