Oso Railworks, Inc. was started in 1994 by David and Lynda Rygmyr. Our original location was in Oso (Arlington) Washington, which is where our name came from. Oso is the Spanish word for bear, and the hamlet of Oso was at one point an active logging town during the steam-era of the logging industry.

Oso Railworks, Inc. is now located in Hamilton, Montana, about an hour south of Missoula. Vitrually everything we make is done right here in the USA.

For inquiries, please email:

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