List of Washington State Routes

Marker for SR 9, SR 20, and SR 410
Map of Washington's highways
Highway names
Interstates:	Interstate X (I-X)
US Highways:	U.S. Route X (US X)
State:	State Route X (SR x)
System links
State highways in Washington Interstate US State Scenic Former PSH 1964 renumbering Former

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.