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.

Much of the landscape is in public ownership, and this section of the highway is a National Scenic Byway. The Greenway includes communities and historic towns, working farms and forests, spectacular alpine scenery, wildlife habitat, campgrounds, trails, lakes and rivers right in our backyard.

People of all ages enjoy the Greenway.

Hope you enjoyed Greenway Days! Join
the Greenway Challenge this summer.

Little Si Trail, Trailhead & bridge
Grand opening took place on June 6th

NEW! The Greenway Trust
launches Designation project

New trail through Marymoor Park

Thanks to all who attended the 
King County Town Hall meeting. If you
missed it, watch the video

Volunteer for trail maintenance
or  ecological restoration events

Register now for FREE summer youth
camps for volunteers ages 10-18

Make a gift  that will protect the
Greenway for future generations!

Get outside in the Greenway or
order your free copy of  the
Greenway Adventures brochure

Visit the Greenway Press Room

Apply for a conservation corps job