Re-designated K-8 in 1959
Counties Passed through: Barber
Around 1940, K-8 between Smith Center and Kiowa was re-designated US 281. The former K-8 between the Oklahoma line and Kiowa was re-designated K-11. At the time it was re-designated, it was still a gravel roadway.
The road was paved sometime between 1953 and 1956.
In a December, 1959 memo, the State Highway Commission's Engineer of Highway Planning notified the State Highway Commission that K-11 was being discontinued and the K-8 designation restored.