Interchange Web Viewer
Welcome to Interchange Web Viewer. This site will allow you to view and print portable document format (.pdf) drawings of state highway interchange areas, couplets and other select locations. The Transportation Data Office (TDO) creates and updates these drawings.
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 have any questions or comments on these drawings, please Email the Roadway Operations Supervisor or call by phone at (360) 570-2361.
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