The Sidi Rached Viaduct, The Sidi Rached bridge is a road viaduct that crosses the Rhummel gorges and connects the Coudiat district to Constantine Train station. It was built in Constantine in French Algeria, between 1908 and 1912, by the engineer Aubin Eyraud, with the help of Paul Séjourné who designed the hangers and finished the construction. It was the tallest Concrete bridge in the world when it was built until.