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 290 Washington State Route 290 State Route 290 (SR 290), named Hamilton Street and Trent Avenue, is an long state highway serving Spokane County in the U.S. state of Washington. SR 290 travels parallel to a Union Pacific railroad from (I-90) in Spokane through Millwood and across the Spokane River thrice towards Spokane Valley, where the highway intersects . From Spokane Valley, the roadway continues to the Idaho state border, where it becomes . The current route of SR 290 was formerly county roads between 1901 and 1937 when it became Secondary State Highway 2H (SSH 2H). The highway ran from