Washington (state) for the southernmost section where the border follows the Snake River. Oregon is to the south, with the Columbia River forming the western part and the 46th parallel forming the eastern part of the Oregon-Washington border. To the west of Washington lies the Pacific Ocean. Its northern border lies mostly along the 49th parallel, and then via marine boundaries through the Strait of Georgia, Haro Strait, and Strait of Juan de Fuca, with the Canadian province of British Columbia to the north. Washington is part of a region known as the Pacific Northwest, a term which always includes Washington and
Washington State Route 547 defunct Sumas–Glacier route of the Chicago, Milwaukee, St. Paul and Pacific Railroad. In 1984, the Washington State Legislature and Washington State Department of Transportation added the road to the state highway system. Washington State Route 547 State Route 547 (SR 547) is a Washington state highway located in Whatcom County, south of the Canada–US border. The long route runs northwest from in Kendall to in Sumas. The highway was originally created in 1984, but a road extending from Kendall to Sumas has been on maps since 1966 along the Sumas–Glacier route of the Chicago, Milwaukee, St. Paul and Pacific Railroad.