Washington State Department of Transportation (WSDOT)This is an extract from the State Highway Log that shows divided highways in Washington State. 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 note, this data depicts divided highways for State Route mainlines only (ie. Ramps are not included). Please direct questions about this dataset to: TransportationGISDataSteward@wsdot.wa.gov.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/fb18129d09e9448c8c1c8da2d4b093e4_2engState of Washington Geospatial Open Data PortalPublicWSDOT - Roadway Data Divided Highway [Washington (State)]Web servicesWashington (State)Last Modified: 2025-10-07