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5. Puente de Ojuela in Mexico
The Puente de Ojuela bridge is located in northern Mexico, in the city of Torreon. Constructed over a steep canyon and 275 meters long, this bridge is now only allowed to be used by pedestrians only, as cars and trucks would be too much weight for the now dilapidated bridge, posing a serious danger of collapsing. The bridge was constructed back in 1898 solely for the benefit of the mining town below, but has since fallen into disrepair when the mining town has started to run dry of gold and silver deposits.