About
San Juan County
San Juan County is the only county in Washington that is not part of a designated RTPO and so does not need to comply with RTPO planning requirements. San Juan County is located within the Northwest Region of WSDOT.
Learn More About Your County & City Plans
If your county or city has this asterisk next to it, it's still growing! Some areas in our state partner with their regional planning agency to build their transportation plan.
