Washington Revised Code Title 47. Public Highways and Transportation § 47.17.960. Local bridges--Department responsibility

Although not part of the state highway system, the bridges designated in this section shall remain the continuing responsibility of the Washington state department of transportation. Continuing responsibility includes all structural maintenance, repair, and replacement of the substructure, superstructure, and roadway deck. Local agencies are responsible for snow and ice control, sweeping, striping, lane marking, and channelization.