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Science on the 31st of October 1886 in history

Science
Date Text
31 Oct 1886 Dom Luís Bridge, Porto
Dom Luís Bridge, Porto

 Dom Luís Bridge, Porto (technology)
Opening of Dom Luís Bridge, Porto, a two-hinged double-deck arch bridge across the Douro River in Portugal designed by Téophile Seyrig. Its main span of 172 metres (564 ft) will remain the world's longest in iron.
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30th October 1886 1st November 1886
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