RCW 47.17.090: State route No. 22.

A state highway to be known as state route number 22 is established as follows:

Beginning at a junction with state route number 82, thence southerly to a junction of state route number 97 in the vicinity of Toppenish; also

From a junction with state route number 97 at Toppenish, thence southeasterly by way of Mabton to a junction with state route number 82 at Prosser.