translate English to French: Two approach viaducts, 1115 and 1140 m long, lead to a central bow-string structure made of three continuous spans crossing the 480 m wide river.
Deux viaducs d’approche de 1115 m et 1140 m encadreront un ensemble de type bowstring composé de trois travées continues franchissant le cours d’eau large de 480 m.