Project design and construction of the Trapagaran Viaduct in Bilbao (Spain)

摘要

The Trapagaran viaduct was divided into 3: main viaduct, access viaduct and transition area. Thernmain viaduct is 670 m long with 125 m spans. It is formed by a 35.60 m wide, 5.90 m deeprnprestressed concrete box cross section. The access viaduct is formed by four separate structuresrnwith spans reaching 86 m. Each of the decks is made up of a mixed 3.50 m deep box girder. Thernfour branches converge in the transition area displaying complex geometry. The transition area is arnprestressed concrete structure of approximately 60 m in span executed on falsework.