List of former state routes in Washington
Wikimedia list article
Since the 1964 state highway renumbering, which established the current state route system, the Washington State Department of Transportation has decommissioned some state routes. Once a highway has been decommissioned, the highway is turned over to the local county or city that it is in, they are then responsible for all maintenance on the former highway. All former highways are codified in Washington law under the Revised Code of Washington, chapter 47.17, section 420.
Other highways during the transition between the 1964 renumbering and codification of the new system in 1970 are not listed here.
State Route 30
State Route 30 was created during the 1964 state highway renumbering as a replacement for Primary State Highway 4 (PSH 4), which connected U.S. Route 97 (US 97) in Tonasket to Republic, and two secondary highways that continued east to US 395 near Kettle Falls. The 80-mile-long (130 km) highway traveled across Wauconda Pass in the Okanagan Highlands and Sherman Pass in the Kettle River Range, forming the northernmost east–west route in Eastern Washington.
Following the completion of the North Cascades Highway in 1972, SR 20 was extended east to form a cross-state route under a single number. SR 30 and SR 294 were decommissioned in 1973 and incorporated into the extended highway, which became the state's longest.
State Route 95
US 95, a major north–south route between Arizona and the Canadian border, ran for 0.91 miles (1.46 km) in Whitman County, Washington, from 1926 to 1979. The short section, between two crossings of the Idaho state line, connected to US 195 northwest of Lewiston, Idaho.
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