Federal highway and transit statutes require, as a condition for spending federal highway or transit funds in urbanized areas, the designation of MPOs, which have responsibility for planning, programming and coordination of federal highway and transit investments. The federally designated MPOs are made up of large urban MPOs (population areas greater than 200,000): the Portland regional area, the Salem/Keizer area, and the Eugene/Springfield area; and small urban MPOs (population areas between 50,000 - 200,000): the Medford/Rogue Valley area, the Cities of Corvallis/Philomath, the City of Bend, Albany area, Middle Rogue, Longview/Kelso/Rainier and Walla Walla Valley.
