Prairie River Bridge | Truss Sides

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Centerbeam Flatcar | Basic Construction

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Introduction Part of the plan for my BNSF Lakes Subdivision layout includes modelling the Potlatch operation just west of Grand Rapids, MN in the 1980s. Potlatch was a manufacturer of Oriented Strand Board (OSB), a sheet material fabricated from wood chips which are combined with a resin and compressed under heat and pressure. The material is shipped in 4' x 8' sheets and used for home construction. I don't have any photos of carloads coming out of the facility, but it is likely that Burlington Northern used their "opera window" centerbeam flatcars manufactured by Thrall.  These cars are available commercially as ready-to-run, but I thought I would take the opportunity to build three of them from scratch in N scale. I have never scratch built any freight cars before, so everything here is new to me. At this point, I don't expect to create something that I would have evaluated for the  NMRA Achievement Program . They should be adequate to meet th
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Prairie River Bridge

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Image: John Marvig Railroad Bridge Photography Introduction I started looking for a new AP project after the regional NMRA convention in Brainerd last weekend and decided to go with the Prairie River Bridge. I will be scratch building it in N scale as part of the bridge requirement for the Master Builder - Structures certificate. This will be the second of six scratch-built structures. According to the requirements, "The remaining six, if not scratch built, must be super detailed with scratch built or commercial parts." Prototype The Prairie River Bridge crosses the Prairie River just east of Grand Rapids, MN on the mainline of the BNSF Lakes Subdivision. The bridge was built in 1899 by the Great Northern. The main span is a seven panel Warren deck truss which was strengthened with the addition of a third center truss in 1929. It is still in service and sees about eight trains per day. Check out the BNSF Prairie River Bridge page by John Marvig for some pictures and inform
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