The

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

of Washington has over of

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...

s maintained by the

Washington State Department of Transportation The Washington State Department of Transportation (WSDOT or WashDOT, both ) is a governmental agency that constructs, maintains, and regulates the use of transportation infrastructure in the U.S. state of Washington (state), Washington. Establi ...

(WSDOT). The highway system is defined through acts by the state legislature and is encoded in the

Revised Code of Washington The Revised Code of Washington (RCW) is the compilation of all permanent laws currently in force in the U.S. state of Washington (state), Washington. Temporary laws such as appropriations acts are excluded. It is published by the Washington State S ...

as State Routes (SR). It was created in

1964 Events January * January 1 – The Federation of Rhodesia and Nyasaland is dissolved. * January 5 – In the first meeting between leaders of the Roman Catholic and Orthodox churches since the fifteenth century, Pope Paul VI and Patria ...

to replace an earlier numbering scheme and ratified by the state legislature in 1970. The system's 196 highways are almost entirely paved, with the exception of a gravel section on SR 165. The state's

Interstate The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National H ...

and U.S. Highways are also defined as part of the state route system, but are omitted from this list. __TOC__

State routes

Special routes

WSDOT does not maintain

business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...

s, which are instead created and signed by local jurisdictions.

References

{{Washington places * State routes