Interstate 5 in Washington (I-5) is a highway in the U.S. state of
Washington that extends from its border with
Oregon to its border with Canada. Serving the cities of
Vancouver,
Kelso,
Chehalis,
Centralia,
Olympia,
Tacoma,
Seattle,
Everett,
Mount Vernon, and
Bellingham, it is the main route between
Portland, Oregon, and
Vancouver,
British Columbia.