I originally posted this information on my old website on March 26, 2009, and last updated it on December 18, 2009.
The St. Helens depot was built in 1923 by the Spokane, Portland & Seattle Railway. There was no passenger service on the Astoria line after 1956, but the depot was still used by the railroad as a base of operation for train and maintenance crews for decades.
The depot was donated to the city of St. Helens in the 1990s, and was renovated into the Chamber of Commerce in 2000. The St. Helens and Astoria depots are the only two depots remaining on the Astoria line.