Washington State Department of Transportation (WSDOT), Environmental Services Office (ESO)This is a view of the ConcreteBarrier featureclass created with the following query: LifeCycleCurrentStatus= 'Active' AND (WSDOTownership in ('Yes', 'Unknown') OR WSDOTownership IS NULL) AND (SWLocationVerified IS NULL OR SWLocationVerified = 'No') This feature class contains WSDOT's stormwater concrete barriers.Stormwater concrete barriers are barriers or walls, such as single-slope or K-barriers, which concentrate and convey stormwater flows, even if they were not designed or installed with the primary intent of being a conveyance. This feature class only contains concrete barrier segments actively concentrating and conveying stormwater flows (i.e., a barrier located at the high side of a super-elevated roadway will not concentrate and convey stormwater flows and therefore will not be mapped). The majority of the data collected so far are within the Phase I and Phase II 2009 NPDES Municipal Stormwater Permit Areas.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/d14ee525e0c8461eb00e3326d6f56734_12engState of Washington Geospatial Open Data PortalPublicWSDOT - Stormwater Concrete Barrier - Office [Washington (State)]Web servicesWashington (State)Last Modified: 2026-01-06