The U.S. state of Washington has over 7,000 miles (11,000 km) of state highways maintained by the Washington State Department of Transportation (WSDOT).[1] The highway system is defined through acts by the state legislature and is encoded in the Revised Code of Washington as State Routes (SR). It was created in 1964 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.
| State Routes in Washington | |
|---|---|
Highway markers for State Route 4, State Route 27, and State Route 520 | |
 The state highway system of Washington | |
| System information | |
| Length | 7,054.96 mi[1] (11,353.86 km) |
| Formed | 1964 |
| Notes | Maintained by WSDOT |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route X (US X) |
| State | State Route nn (SR nn) |
| Spur Routes: | State Route nn Spur (SR nn Spur) |
| System links | |
The state's Interstate and U.S. Highways are also defined as part of the state route system, but are omitted from this list.
State routes
edit
Special routes
editWSDOT does not maintain business routes, which are instead created and signed by local jurisdictions.[4]
References
edit- ^ a b c d Multimodal Planning Division (January 3, 2018). State Highway Log Planning Report 2017, SR 2 to SR 971 (PDF) (Report). Washington State Department of Transportation. Retrieved July 5, 2018.
- ^ "Chapter 47.17: State Highway Routes". Revised Code of Washington. Washington State Legislature. Retrieved November 23, 2022.
- ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad "Chapter 47.17 RCW Dispositions: State Highway Routes". Revised Code of Washington. Washington State Legislature. Retrieved July 5, 2018.
- ^ "WSDOT Traffic Manual, Chapter 2: Signs" (PDF). Washington State Department of Transportation. May 2021. p. 2-52. Retrieved September 10, 2021.
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