Ponte Dom Luis - Porto
The Dom Luis bridge was built over River Douro to replace de Suspension Bridge, being the Belgian company Societé de Willebroeck in charge of this work, with a project by the engineer Teófilo Seyrig . Ponte Dom Luis It was inaugurated in 1886 and classified as National Monument in 1982. It has one of the World's largest arcs in wrought iron and two decks. Nowadays the upper deck is crossed by the one of Porto's underground lines, and the lower deck, 6850in long, can be one of the passages to get to Vila Nova de Gaia, whether by car or on foot. João Pires