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Really nice model! [quote user="hardcoalcase"]But I do have one question... prototypically speaking - would such a small bridge be able to handle 30-40 ton hopper-gons and medium sized consolidations? If not, I'll build it for horse and buggy traffic.[/quote] SS Ltd claims that the inspiration was a narrow gauge bridge over Dinky Creek in California. There is a similar bridge of this type there but it was a highway bridge built in 1938: <a href="https://upload.wikimedia.org/wikipedia/commons/b/b3/Dinkey_Creek_Bridge.jpg">https://upload.wikimedia.org/wikipedia/commons/b/b3/Dinkey_Creek_Bridge.jpg</a>  from <a href="https://en.wikipedia.org/wiki/Dinkey_Creek_Bridge">https://en.wikipedia.org/wiki/Dinkey_Creek_Bridge</a> For loads as you describe I would change the bottom chord. For higher loads I would avoid the many splices in the tensile member and use longer timbers with fewer splices like in a Howe truss bridge. The arched top chord needs these splices for the shape anyway. Pressure joints are easier as one can make them form-fitting the contact load transfer. Regards, Volker
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