Washington State Department of TransportationState Routes are depicted as lines with State Route identifiers and route measure attributes. Routes in this featureclass are for the decreasing side of the highway mileposting. Please direct questions about this dataset to: TransportationGISDataSteward@wsdot.wa.gov.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/40b7c84081ca4bb9b47be931585817e3_1engState of Washington Geospatial Open Data PortalPublicWSDOT - State Route Decreasing (1:24K) Current [Washington (State)]Web servicesWashington (State)Last Modified: 2025-10-07