4A e 4B Viaducts
The 4A and 4B viaducts cross the Travesso Valley near the Coimbra north interlink node with the A1 Motorway. Both viaducts have end spans of 24m and current spans of 30m. The V4A viaduct is constituted of “A” and “D” branches, where the “A” branch has a total length of 588m. The V4B viaduct is […]
Lis River Bridge
The total length of the Lis River Bridge and viaducts is 924m. The bridge section is a 220m continuous superstructure comprised of three spans with two parallel prestressed concrete, box girder decks, cast “in-situ” using the balanced cantilever method in 5m segments. The main span has 100m. The access viaducts, with a total length of […]
Kwanza Barra Bridge rehabilitation
This bridge was originally designed by Professor Edgar Cardoso and it crosses the mouth of the Kwanza River, south of Luanda, Angola, and was built in 1975 under very difficult circumstances. Due to the lack of maintenance in 1990 a provisional emergency intervention was needed to prevent its collapse due to the rupture of one […]
Viaduct IX
The viaduct IX crosses the valley at a maximum height of 80m. It comprises two parallel, continuous bridge decks, one of which is 486m long and the other 456m. The decks are composite, with steel beams and prefabricated reinforced concrete slabs. The construction method used was the incremental launching one. The piers have a maximum […]
Ínsuas viaducts
The Ínsuas viaducts cross the Ínsuas Valley in the Fafe South interlink node of the A7 motorway (toll road). This group of viaducts comprises a viaduct in the main road and three viaducts in the motorway access branches A, D and B. Each of all decks is constituted by a slab and two longitudinal girders […]
Sado River Bridge
The Sado Bridge and its access viaduct was a design and build tender with an extremely short construction period. The east structure, nearly 1800m long, was built in 6 months and the entire construction completed in just one year. Each of the two parallel bridge decks is a three span box girder with a total […]
Laceiras viaduct
This viaduct’s decks are constituted by two parallel 22-span continuous structures. The decks are two independent prestressed concrete girders. Each deck is constituted by a slab and two longitudinal girders without cross-beams. The total length of each deck is 972m distributed by two 36m end spans and twenty 45m intermediate spans. The total width of […]
Edgar Cardoso Bridge rehabilitation
The Figueira da Foz Bridge, currently named after its designer as Edgar Cardoso Bridge, has a total length of 1421m distributed by the left abutment with 25m, the left bank viaduct with 630m, the bridge with 405m, the right bank viaduct with 315m and the right abutment with 46m. It opened to traffic in 1982, […]
Varosa Valley Bridge
The Varosa Valley Bridge crosses the valley at a maximum height of 120m. It comprises two parallel six-span box girders in prestressed concrete with a total length of 460m each. These were cast “in situ” in 5.00m segments using the balanced cantilever method. The piers have maximum height of 80m with hollow rectangular variable cross-section […]
Balsemão Valley Bridge
The bridge crosses the Balsemão Valley at height of 110m and comprises two parallel six span box girders in prestressed concrete with a total length of 460m each. These were cast “in situ” in 5.00m segments using the balanced cantilever method. The piers have a maximum height of 73m with hollow rectangular variable cross-section shafts […]
