Regional Partners
Exploring Regional Transportation Planning Organizations (RTPOs) and Metropolitan Planning Organization (MPOs)
SWRTPO is a five-county RTPO covering all of Cowlitz, Grays Harbor, Lewis, Pacific, and Wahkiakum counties. It includes the bi-state federal metropolitan planning area of Longview and Kelso, Washington and city of Rainier, Oregon. The Cowlitz-Wahkiakum Council of Governments is the lead agency for SWRTPO. SWRTPO is located within the Southwest Region of WSDOT.
Cowlitz-Wahkiakum Council of Governments
2040 Regional Transportation Plan
2014 Human Services Transportation Plan
