Wash. Rev. Code § 47.60.250
As a condition to a recovery thereon, a verified claim against the department growing out of such damages, loss, injuries, or death must first be presented to the department and filed with the secretary within one hundred twenty days after the time when the claim accrued. If the claimant is incapacitated from verifying and filing a claim within the one hundred twenty days, or if the claimant is a minor, then the claim may be verified and presented on behalf of the claimant by his or her relative, attorney, or agent. Each claim must accurately locate and describe the event or defect that caused the damage, loss, injury, or death, reasonably describe the damage, loss, or injury, and state the time when the damage, loss, or injury occurred, give the claimant's residence for the last six months, and contain the items of damages claimed. No action may be maintained against the department upon the claim until the claim has been presented to, and filed with, the department and sixty days have elapsed after the presentation and filing, nor more than three years after the claim accrued.
With respect to the content of the claims, this section shall be liberally construed so that substantial compliance will be deemed satisfactory.
RCW 47.60.250
Purpose-Severability-1967 c 164: See notes following RCW 4.96.010.
Claims against the state: Chapter 4.92 RCW.