Bridge of Don Maria Pia, also known as Ponte Maria Pia is a rail infrastructure over the Douro River, which connects the Town of Santa Marinha (Vila Nova de Gaia) to Oporto.This bridge, made of metal, has a board with 352 meters long, the arch under the pan so biarticulated, has 160 feet of rope and 42.60 meters in height. The height from the water level was 61 meters.
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