Collection: Polson Logging Company Side Dump Car


A string of Polson Logging Co. side dump cars filling in a low trestle. H.G. Nelson photograph.

Constructed by Seattle Car & Foundry circa. 1915, this car was used in the construction of the logging railroads of the Polson Logging Co. in the Grays Harbor area of Washington State.  Material such as dirt and gravel was loaded in the four cubic yard box and the load could be dumped to either side of the track. To dump the load, rings over chains on the opposite side to be dumped are removed and the body tilts. In 1945 Polson was acquired by Rayonier Inc. The two cars in the collection were donated by Rayonier in 1968. The last use at the museum was in the 1980’s.

The proposed period for the restoration is the 1950’s while in service with Rayonier. Several major changes were made to the cars over the years with the most significant being the replacement of the 24” diameter wheels and journal boxes with 33” wheels and journal boxes from archbar freight car trucks. One of the other changes to the cars was the substitution of 2x12 lumber in the dump box sides, replacing the original 2x8’s.

History researched and written by Richard Wilkens

Special Update


Why do we still require masks? Transportation Security Adminsitration ("TSA") regulations currently require all railways, airlines and buses to have persons masked through January 2022. Though social distancing regulations are loosening in much of the region, the Snoqualmie Valley Railroad falls under the jurisdiction of the Federal Railway Administration and TSA. We ask that all visitors over the age of 2 and require for those over the age of 5 to wear a mask that covers both nose and mouth while visiting. By order of King County, proof of vaccination will be required beginning October 25 for all visitors aged 12 and older. The vaccine requirement is a legal mandate imposed by King County. The Museum is required to enforce the law as a condition of remaining open to the public. The Museum has already lost $1.4 million from closures and capacity reductions, further closures would be absolutely disasterous to the Museum. For more information about our social distancing restrictions please visit our Social Distancing Updates page.

Museum Hours

Snoqualmie Depot Hours: 10am - 5pm, 7 days a week. No admission charge to visit the depot and grounds

Closed Thanksgiving, Christmas Day and New Year's Day. There is limited access during Day Out With Thomas and Santa Train events.

Railway History Campus Hours: 11am to 4pm, Wednesdays-Mondays through November 22. Click here for the holiday schedule. Closed Thanksgiving, December 18, 2021 -January 14, 2022.

Price: No admission charge to visit the Snoqualmie Depot and grounds. Admission $10 per adult (age 13+), $5 per child (2-12) to visit the Train Shed Exhibit Hall

Riding the Train: Saturdays, January-March; Saturdays and Sundays, April-December