Interstates: Interstate X (I-X) State: State Route X (SR x) | US Highways: U.S. Route X (US X) | |
This is a list of state routes in the U.S. state of Washington that have existed since the 1964 renumbering. It includes routes that were defined by the Washington State Legislature but never built, as well as routes that have been entirely removed from the state highway system.
References
List of state routes in Washington Wikipedia(Text) CC BY-SA