Washington State Route 431

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State Route 431
Auxiliary route of SR 4
Maintained by WSDOT
Formed: 1967
North end: SR 4 in Kelso
South end: I-5 near Kelso
State highways in Washington
Lists: current - 1937-70 - 1964 renumbering

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.[1]

[edit] History

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.

[edit] References

  1. ^ Highways of Washington State. Highways of Washington State. Retrieved on 2008-05-17.