A state highway to be known as state route number 523 is established as follows:
Beginning at a junction with state route number 99 and Northeast 145th Street in Seattle, thence easterly to a junction with state route number 522.
RCW 47.17.727
State route No. 523.
1991 c 342 s 40.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.