Spirit Lake Memorial Highway (SR 504) extends east from I-5, following the north fork of the Toutle River as it ascends to Coldwater Ridge and the western edge of Mount St. Helens National Volcanic Monument. Rebuilt after Mount St. Helens' eruption, the two-lane highway provides views of the volcano’s horseshoe-shaped crater and access to trails at Coldwater Lake.
Travel Like an Expert with AAA and Trip Canvas
Get Ideas from the Pros
As one of the largest travel agencies in North America, we have a wealth of recommendations to share! Browse our articles and videos for inspiration, or dive right in with preplanned AAA Road Trips, cruises and vacation tours.
Build and Research Your Options
Save and organize every aspect of your trip including cruises, hotels, activities, transportation and more. Book hotels confidently using our AAA Diamond Designations and verified reviews.
Book Everything in One Place
From cruises to day tours, buy all parts of your vacation in one transaction, or work with our nationwide network of AAA Travel Agents to secure the trip of your dreams!