Took that train to Vancouver, BC. The train stays there all day until around 4PM then heads back to Seattle, King St. station. Seems like something was wrong with the overpass it went over.
Are you sure? They said they just opened this today, which I assume is a branch/spur, not a theough line.
I was on Amtrack out of Lorton Virginia when it derailed off the track before even leaving the depot...simply slide off the track. Couple hours delayed in order to lift it back on track.