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PORTUGAL EXCURSIE / KABK AFD. INTERIEUR ARCHITECTUUR / 2012PORTUGAL EXCURSIE / KABK AFD. INTERIEUR ARCHITECTUUR / 2012PONTE DOM LUIS I18OntwerpLEOPOLD VALENTINGegevenslocatie Portofunctie Bridgegebouwd 1886InformatieThe Luís I Bridge (Ponte Luís I) is a metal arch bridge that spans the Douro Riverbetween the cities of Porto and Vila Nova de Gaia in Portugal. At the time of constructionits span of 172 m was the longest of its type in the world.The Government held a competition for the construction of a metallic bridgeover the Douro River on a site that was adjacent to an existing bridge and wouldreplace it. Téophile Seyrig had already engineered the D. Maria Pia Bridge projectnearby, whilst working as a partner of Eiffel. He now took sole responsibility for thenew, major Luís 1st Bridge. The construction was begun in 1881 and the bridgeopened on 31 October 1886.Originally built to take road traffic on both decks, at various times it saw trams onthe upper and trolleybuses on the lower. The top deck is now occupied by Line Dof the Metro do Porto and a pedestrian walkway.Total length 385.25 mWeight 3045 tonsThe arch measures 172 m in length and 44.6 m in height5253