Washington (state) Washington (state) Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the United States. Named for George Washington, the first president of the United States, the state was made out of the western part of the Washington Territory, which was ceded by Britain in 1846 in accordance with the Oregon Treaty in the settlement of the Oregon boundary dispute. It was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle. Washington is sometimes referred to as Washington State, to distinguish it
Washington State Route 529 1913, the Pacific Highway was added to the state highway system and used Broadway (former SR 529) in Everett and State Avenue in Marysville to travel between Seattle and the Canada–US border. The Pacific Highway between Everett and Marysville, named the Vernon Road, was paved in 1916 and paid by a county road bond issue. The highway was later signed as in 1923, which became the Washington segment of (US 99) during the creation of the United States Numbered Highways in 1926. Since the bridges over the Snohomish River delta weren't complete at the time of planning, US 99 used