State route No. 18.
RCW 47.17.075
in effectA state highway to be known as state route number 18 is established as follows: Beginning at a junction with state route number 99 in the vicinity of northeast Tacoma, thence northeasterly by way of Auburn to a junction with state route number 90 west of North Bend.
A state highway to be known as state route number 18 is established as follows:
Beginning at a junction with state route number 99 in the vicinity of northeast Tacoma, thence northeasterly by way of Auburn to a junction with state route number 90 west of North Bend.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=47.17&full=trueFetched: 6/29/2026