Established in 1921 as an original state highway and has not changed since.

Route 49 is one of the original 1922 state highways.

Route 46 is one of the original state highways from 1922.

Route 90 was one of the original 1922 state highways.

Route 28 was one of the original state highways and it has changed very little.

It is one of the original 1922 highways in Missouri.

The original highway was much shorter than the current version.

The law passed on July 22, 1976 and the original highway had no designation.

Arkansas Highway 13 was one of the original 1926 state highways.

Highway 20 was one of the original state highways, designated in 1926.