The Cascades train operates between Vancouver and Eugene-Springfield, Oregon.
According to Amtrak, the 506 train went off the rails at the Chambers Bay Bridge in Steilacoom, just south of Tacoma, at 2:30 p.m.
This train is 15 cars long and passengers aboard had different experiences depending on where they were sitting.
An Amtrak train carrying 267 passengers derailed Sunday near the Chambers Bay golf course in Pierce County, in Washington D.C. No casualties were reported, however, some people suffered minor injuries, according to Amtrak. The fire department said there were "no significant injuries or fire during the incident".
None of the crew was hurt, said Amtrak spokesperson Chelsea Kopta.
The train that derailed was moved off the tracks during the investigation, but all the cars were put back by Monday morning, officials said.
Photos posted on social media show several cars of the train tipped over on the tracks, near the waters of the bay.
All passengers were evacuated and provided with alternate transportation on five buses. Passengers say they are very lucky no one was seriously injured and it could have been a lot worse given the trains proximity to the water.
Investigators will work to pinpoint the cause of the crash on Monday.
Firefighters also deployed floating oil-absorbent booms in the water in case of a fuel spill, but none occurred, the fire department said.
Amtrak trains between Seattle and Portland are scheduled to depart on time.