Transportation Data, GIS & Modeling

Interchange Viewer

Welcome to the WSDOT Interchange Viewer. Here you can view and print drawings of state highway interchange areas, couplets and other select locations, in pdf format. While not drawn to scale, these drawings can be used to help locate collisions more accurately, to identify specific ramps and to assist in other planning purposes. The interchange drawings are updated through state highway construction contracts, subsequent on-site inspections and input from WSDOT staff.

If you need additional information or have questions please contact Lou Baker in the GIS & Roadway Data Branch or you can reach him by phone at (360) 570-2361.


Select an area on the map to zoom to state routes or use the dropdown list to choose a specific state route:

Zoom to Puget SoundZoom to SoutheastZoom to South CentralZoom to SouthwestZoom to NortheastZoom to North CentralZoom to Northwest

State Routes with Drawings