A state highway to be known as state route number 506 is established as follows:
Beginning at Ryderwood, thence by way of Vader northeasterly to a junction with state route number 5 west of Toledo.
RCW 47.17.665
State route No. 506.
1970 ex.s. c 51 s 134.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.