Mountains to Sound Greenway

Interstate highways often become the province of strip malls, billboards and spreading urban development. But people in the Pacific Northwest wanted a different future for the historic road over Snoqualmie Pass.

In 1990, local citizens created a plan for the Mountains to Sound Greenway to keep an accessible landscape of forests, wildlife habitat and open spaces as breathing room for people, and a place of incomparable beauty, history and outdoor recreation for their children and grandchildren.

Today, the Greenway stretches along 100 miles of Interstate 90 in Washington State from the waterfront in Seattle to the edge of desert grasslands in Central Washington.

Most of the landscape not already developed along I-90 is in public ownership and protected as the Mountains to Sound Greenway and designated as a National Scenic Byway. The Greenway includes historic towns and over 750,000 acres of foothills, working farms and forests, spectacular alpine scenery, wildlife habitat, campgrounds, trails, lakes and rivers right in our backyard.