Footbridge over the Sant Adria Marina in Barcelona, Spain

Abstract

This paper presents a description of a continuous truss footbridge comprising two spans, one of 140 m and the other 50 m. The bridge crosses the Sant Adria Marina, close to Barcelona. The width of the deck is 6 m and the depth of the two trusses, which form the bridge, range between 6 and 10 m. Main innovations are the use of recycled aggregates for concrete in the approach slab deck, the use of silica fume concrete for the pavement which performs well from the strength, durability and aesthetic points of view and the formal exploration of irregular longitudinal layouts in truss bridges. This formal exploration resulted in the creation of an internal space extremely pleasant for people and avoiding any tunnel sensation. Moreover, the absence of dynamic loads and the light live load allowed the trusses to be designed without using gusset plates.