Wash. Rev. Code § 47.17.475
A state highway to be known as state route number 260 is established as follows: Beginning at a junction with state route number 17 west of Connell, thence easterly to a junction with state route number 395 in the vicinity of Connell, thence northeasterly by way of Kahlotus to a junction with state route number 26 at Washtucna.
[ 1970 ex.s. c 51 s 96.]