WSDOT Online Map CenterThis dataset provides geospatial locations and general bridge information for structures Owned By or Managed By WSDOT Bridge Preservation Office (BPO).The WSDOT Bridge Structures (Under) layer is a point dataset that represents a location at which a route crosses beneath a bridge/structure (a bridge/structure that is not represented in the (Bridge Structures (On) dataset) for example: pedestrian bridges, railroad bridges or tunnels. Vertical clearance minimum restrictions for a particular structure will be represented in the MinVertClrncUnderBridge or TunnelMinVertClrncOverRdBy10 fields. For more specific and detailed vertical clearance information please use the WSDOT Bridge Vertical Clearance Trip Planner: https://www.wsdot.wa.gov/Bridge/Structures/BVCTP.htm (Chrome Browser works best)ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/f7643bc8fac54796b2aa11817c86c0b6_1engState of Washington Geospatial Open Data PortalPublicWSDOT - State Bridge Structures (Under) [Washington (State)]Web servicesWashington (State)Last Modified: 2026-01-08