In 1937, the highway was extended on both ends, on the west to its current western terminus at U.S. Route 127 west of Chickasaw, and on the east to its current eastern endpoint at State Route 273 northeast of Rushsylvania.
In 1937, the highway was extended in both directions: to its new western end at U.S. Route 127 west of Chickasaw, and to its eastern terminus at State Route 273 northeast of Rushsylvania.