A state highway to be known as state route number 531 is established as follows:
Beginning at Wenberg state park, thence northerly and easterly to a junction with state route number 9 in the vicinity north of Marysville.
RCW 47.17.757
State route No. 531.
1991 c 342 s 44.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.