State route No. 599.
RCW 47.17.808
in effectA state highway to be known as state route number 599 is established as follows: Beginning in the vicinity south of Seattle at a junction with state route number 5, thence in a northwesterly direction west of the Duwamish river to a junction with state route number 99 in the vicinity of South 118 street south of Seattle.
A state highway to be known as state route number 599 is established as follows:
Beginning in the vicinity south of Seattle at a junction with state route number 5, thence in a northwesterly direction west of the Duwamish river to a junction with state route number 99 in the vicinity of South 118 street south of Seattle.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=47.17&full=trueFetched: 6/29/2026