List of former state highways in Washington

For a list of current state highways, see List of state highways in Washington.

System information
Notes:	Defined by RCW 47.17.420
Highway names
Interstates:	Interstate X (I-X)
US Routes:	U.S. Route X (US X)
State:	State Route X (SR x)
System links
State highways in Washington Interstate • US • State Former PSH • 1964 renumbering • Former SR

Since the 1964 state highway renumbering, which established the current state route system, the Washington State Department of Transportation has decommissioned thirty state routes. Once a highway has been decommissioned, the highway is turned over to the local county or city that it resided in, who is 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.

State Route 30

State Route 30
Location:
Existed:	1970–1973

State Route 95

Main article: U.S. Route 95

State Route 95
Location:
Existed:	1970–1979

State Route 110

Main article: Washington State Route 110

State Route 110
Location:
Existed:	1970–1975

State Route 111 Temporary

State Route 111 Temporary
Location:
Existed:	1970–1971

State Route 111 was a state highway in the U.S. state of Washington, running from Hurricane Ridge in the Olympic National Park to US 101.

State Route 113

The portion of Washington State Route 20 within Jefferson and Island Counties was once known as SR 113.

State Route 113
Location:
Existed:	1970–1973

State Route 126

State Route 126
Location:
Existed:	1970–April 1, 1992

SR 126 was a state route in the U.S. state of Washington. It was an auxiliary route of US 12. It started at US 12, then headed east to US 12 again, where it ended. In January 1964, SSH 3L became SR 126. SR 126 was dropped out of the system in 1992 because it was mostly very steep and unpaved.^[1]

State Route 131

SR 131 was a section of what is now known as US 97, north of Ellensburg.

State Route 131
Location:
Existed:	1970–1975

State Route 140

Main article: Washington State Route 140

State Route 140
Location:
Existed:	1970–April 1, 1992

State Route 143

State Route 143
Location:
Existed:	1973–1985

State Route 151

State Route 151
Location:
Existed:	1970–1987

State Route 209

State Route 209
Location:
Existed:	1970–April 1, 1992

State Route 209 was a state route in the U.S. state of Washington. It was an auxiliary route of U.S. Route 2. It started at SR 207 in Lake Wenatchee State Park and went east to the community of Plain and then south to U.S. Route 2 near Leavenworth. In January 1964, SSH 15C became SR 209 and SR 207. SR 209 was removed in 1992.^[2]

State Route 220

Main article: Washington State Route 220

State Route 220
Location:	220
Existed:	1970–April 1, 1992

State Route 232

State Route 232
Location:
Existed:	1970–April 1, 1992

State Route 232 was a state route in the U.S. state of Washington. It was an auxiliary route of State Route 23. It started at SR 231 and went east to U.S. Route 395. In 1967, SSH 3U became SR 232. SR 232 was later removed in 1992.^[3]

State Route 237

Main article: Washington State Route 237

State Route 237
Location:
Existed:	1975–April 1, 1992

State Route 251

Main article: Washington State Route 251

State Route 251
Location:
Existed:	1970–1983

State Route 294

State Route 294
Location:
Existed:	1970–1973

State Route 304

State Route 304
Location:
Existed:	1970–April 1, 1992

State Route 306

State Route 306
Location:
Existed:	1970–1993

State Route 306 was a state route in the U.S. state of Washington. It was an auxiliary route of State Route 3. It started at SR 303 and went east to Illahee State Park. In 1964, part of SSH 21B became SR 306. SR 306 was later removed in 1992.^[4]

State Route 311

Main article: Washington State Route 211

State Route 311
Location:
Existed:	1970–1973

State Route 402

Main article: Washington State Route 4

State Route 402
Location:
Existed:	1970–1971

State Route 403

Main article: Washington State Route 403

State Route 403
Location:
Existed:	1970–April 1, 1992

State Route 407

Main article: Washington State Route 4

State Route 407
Location:
Existed:	1970–April 1, 1992

State Route 431

State Route 431
Location:
Existed:	1970–April 1, 1992

State Route 431 was a state route in the U.S. state of Washington. It was an auxiliary route of State Route 4. It started at SR 4 and went north to I-5. In 1964, a branch of PSH 12 became SR 831. SR 831 was an auxiliary route of U.S. Route 830 and the route was switched to the current designation of SR 4 in 1967. SR 431 was later removed in 1992.^[5]

State Route 514

State Route 514
Location:
Existed:	1970–April 1, 1992

SR 514 was a state route in the U.S. state of Washington. It was an auxiliary route of Interstate 5. It started at SR 99 in Fife, then headed east to SR 161, where it ended in Milton. In January 1964, SSH 1X became SR 514. On April 1, 1992, SR 514 became defunct.^[6]

State Route 537