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How America Built 300-Foot Wooden Trestles Across Canyons
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1,388 观看3829:05GlobalOldHistory原视频发布: 2026-05-24

The construction of 300-foot wooden trestles across American canyons in the late 19th century was achieved through innovative engineering solutions including stacked bent structures (frames of vertical timbers with angled posts for wind resistance), prefabricated components shipped by rail, and skilled labor working in two directions simultaneously, allowing rapid construction of 650-foot structures like the Dale Creek Bridge in just 85 days despite the absence of industrial steel and limited resources.

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