Pencil and paper bridge monitoring. Your browser does not support the video tag. Previously: 116 excavators demolish bridge overnight in China - video 1938 Niagara Falls bridge collapse - GIF Bridge collapse in Taiwan - GIF Gateshead Millennium Bridge tilting - GIF Log bridge car crossing - GIF Veluwemeer Aqueduct water bridge - GIF and video
New plans added on 12/18/2024: Click here for 2,637 plans for homemade tools.
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