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8

Based on the layouts from this answer, a half-bridge seems to be 2 straight tracks + 1 quarter-circle (split mid-track at the end, because the middle of the bridge is centered with the crossing track below it). From this guy's measurements, a quarter-circle of the newer DUPLO tracks is about 18x18 studs. Straights are 8 studs long. So, a half-bridge should ...


8

The compression member in your design looks thin to me, and the tension member oversize (assuming they are the top and bottom respectively). I would use string for tension and the technic beams for compression as the first step. The low-part-count solution that occurs to me is going to kill the clearance under your bridge, but if that's acceptable a single ...


6

I just built the bridge yesterday. I didn't have all the parts so had to be creative at some points. I'll improve some joints once I picked up more of my Lego at my dads' place. Very funny project! Pictures:


3

I've used white nylon rope / string for my Lego bridges. When I think of twine I think of the tannish, brownish, rough, fraying type of string. The nylon stuff is cleaner and in my humble opinion appears sharper. A Lego purist would not allow any non-Lego element in a creation, but when it comes to suspension bridges, there are very few options. I've ...


3

Thanks for your help with this construction. I have made a faithful copy of this 1968 catalog bridge, pics:- https://www.flickr.com/photos/131944227@N06/28091380200/in/dateposted-public/ https://www.flickr.com/photos/131944227@N06/27757745164/in/dateposted-public/ also a list of components. Hope that's helpful. I have a 12 image photo diary of the build ...


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