Washington's Sunset Highway

The Sunset Highway works its way east to west across the 300-mile-wide expanse of Washington State from the Spokane River to its ending at Seattle on Puget Sound. Later known as Highway 10, the route traverses a landscape of big cities, small towns, and wide-open spaces; rolling hills and rugged mountains; fertile fields of grain, apple orchards, and ranches; roaring streams, deep rivers, and rock-walled coulees—now dry, but once a mighty watercourse. The Sunset Highway arose from a collect...