A state highway to be known as state route number 170 is established as follows:
Beginning at a junction with state route number 17 west of Warden, thence easterly to Warden.
RCW 47.17.345
State route No. 170.
1970 ex.s. c 51 s 70.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.