Regional Partners
Exploring Regional Transportation Planning Organizations (RTPOs) and Metropolitan Planning Organization (MPOs)
PRTPO is a four-county RTPO covering all of Asotin, Columbia, Garfield, and Whitman counties. The cities of Asotin and Clarkston, and urbanized areas of Asotin County are part of the Lewis-Clark Valley bi-state federal metropolitan planning area that also includes Lewiston and urban portions of Nez Perce County in Idaho. PRTPO is located within the Eastern Region and the South Central Region of the WSDOT.
Palouse Regional Transportation Planning Organization
2040 Regional Transportation Plan for the Palouse Region
2018 Human Services Transportation Plan
