Three State Map Ross Lake-Mt Baker Cold Springs - Ross Lake Sweat Creek - Cold Springs Columbia River - Sweat Creek Port Townsend to Cape Alava Chuckanut Dr. to Port Townsend Mount Baker to Chuckanut Dr. Cape Alava Kootenai River to the Columbia Chief Mountain Customs to Polebridge Polebridge to Eureka Eureka, MT to Kootenai River