Porto -D.Luis I Bridge upper deck is occupied by a light rail system (Metro do Porto), the pedestrian walkway on the lower deck offers great views on the historic center of Porto, the Port wine caves of Gaia and the river Douro.
Upper Deck - Dom Luís I Bridge - Upper Deck - Dom Luís I Bridge The Dom Luís I Bridge is a double-decked metal arch bridge that spans the Douro River between the cities of Porto and Vila Nova de Gaia in Portugal. At the time of construction its span of 172 m was the longest of its type in the world. Designed by Téophile Seyrig. Construction begun in 1881 and the bridge opened on 31 October 1886 (the upper deck; the lower deck opened in 1887. — in Porto, Portugal.
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