Pacific Highway (United States) from the Hudson's Bay Company were the first non-Native Americans to use the route of the future Pacific Highway to move between today's Washington State and "Alta California." During the second half of the 19th Century, mule trains, stagecoaches, and the Central Pacific Railroad also followed the route of the Siskiyou Trail. In the early 20th century, around 1910, entrepreneur Sam Hill lobbied the governments of Washington and Oregon to build automobile roads along the path of the Siskiyou Trail, with the ultimate goal of building a paved auto route from Canada to Mexico. Pacific Highway (United States) Pacific Highway
Washington State Route 99 Washington State Route 99 State Route 99 (SR 99), also known as the Pacific Highway, is a state highway in the Seattle metropolitan area, part of the U.S. state of Washington. It runs from Fife in the south to Everett in the north, passing through the cities of Federal Way, SeaTac, Seattle, Shoreline, and Lynnwood. The highway is divided into two segments by a gap in the city of Tukwila, between the interchanges of SR 518 and SR 599. The route primarily follows arterial streets and has several freeway segments, including the Alaskan Way Viaduct in Downtown Seattle. SR 99