Wash. Rev. Code § 8.04.090
In case the state shall require immediate possession and use of the property sought to be condemned, and an order of necessity shall have been granted, and no review has been taken therefrom, the attorney general may stipulate with respondents in accordance with the provisions of this section and RCW 8.04.092 and 8.04.094 for an order of immediate possession and use, and file with the clerk of the court wherein the action is pending, a certificate of the state's requirement of immediate possession and use of the land, which shall state the amount of money offered to the respondents and shall further state that such offer constitutes a continuing tender of such amount. The attorney general shall file a copy of the certificate with the office of financial management, which forthwith shall issue and deliver to him or her a warrant payable to the order of the clerk of the court wherein the action is pending in a sum sufficient to pay the amount offered, which shall forthwith be paid into the registry of the court. The court without further notice to respondent shall enter an order granting to the state the immediate possession and use of the property described in the order of necessity, which order shall bind the petitioner to pay the full amount of any final judgment of compensation and damages which may thereafter be awarded for the taking and appropriation of the lands, real estate, premises, or other property described in the petition and for the injury, if any, to the remainder of the lands, real estate, premises, or other property from which they are to be taken by reason of such taking and appropriation, after offsetting against any and all such compensation and damages the special benefits, if any, accruing to such remainder by reason of the appropriation and use by the state of the lands, real estate, premises, or other property described in the petition. The moneys paid into court may at any time after entry of the order of immediate possession, be withdrawn by respondents, by order of the court, as their interests shall appear.
RCW 8.04.090