RCW 79.120.020: Streets, waterways, etc., validated.

All alleys, streets, avenues, boulevards, waterways, and other public places and highways located and platted on the first-class tidelands and shorelands, or harbor areas, as provided by law, and not vacated as provided by law, are validated as public highways and dedicated to the use of the public for the purposes for which they were intended, subject to vacation as provided for in this chapter.