Washington State Department of Transportation (WSDOT)This is an extract from the State Highway Log that shows access control information along State Routes. State Route identifiers and locations based on State Route Mileposts and Accumulated Route Mileage are also included for geographic reference and for use with the Washington State Department of Transportation's 24k and 500k Linear Referencing Systems. Please direct questions about this dataset to: TransportationGISDataSteward@wsdot.wa.gov.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/efc10b7e7cc6484198aae01eacc87241_11engState of Washington Geospatial Open Data PortalPublicWSDOT - Roadway Data Surface Type [Washington (State)]Web servicesWashington (State)Last Modified: 2025-10-07