Wash. Rev. Code § 87.03.455
The board of directors shall have power to construct the *said works across any stream of water, water course, street, avenue, highway, railway, canal, ditch or flume, which the route of said canal or canals may intersect or cross, in such manner as to afford security for life and property; but said board shall restore the same when so crossed or intersected, to its former state as near as may be, or in a sufficient manner not to have impaired unnecessarily its usefulness; and every company whose railroad shall be intersected or crossed by *said works, shall unite with said board in forming said intersections and crossings, and grant the privileges aforesaid; and if such railroad company and said board, or the owners and controllers of the said property, thing or franchise so to be crossed, cannot agree upon the amount to be paid therefor, or the points or the manner of said crossings or intersections, the same shall be ascertained and determined in all respects as is herein provided in respect to the taking of land. The right-of-way is hereby given, dedicated and set apart, to locate, construct and maintain said works over and through any of the lands which are now or may be the property of this state; and also there is given, dedicated and set apart, for the uses and purposes aforesaid, all waters and water rights belonging to this state within the district.
RCW 87.03.455
*Reviser's note: The "said works" apparently refers to those specified in RCW 87.03.445.
Condemnation: RCW 87.03.140 through 87.03.150.