On Friday, December 20, the president of Colombia has inaugurated the New Pumarejo Bridge over the Magdalena River in Barranquilla, Colombia. IDEAM has collaborated with SACYR carrying out the detailed design and the technical assistance to the construction company during the execution of this imposing structure.
It is a bridge with a length of 2173 m between joints, with a central section of 800 m with a central span of 380 m. The bridge is completed with two access viaducts of 618 and 755 m in length and 70 m typical span, as well as two branches in viaduct. The cable-stayed section has 68 pairs of stays anchored every 10 m on the axis of the deck. The pylons have a height of about 35 m below the deck and 85 m above it, reaching a total height of about 125 m from the coronation to the top face of the veneer. The foundation of the pylons is done using 37.4×37.4 m piles with 20 piles of 2.8 m in diameter. The cross section of the deck is composed of a monocellular concrete box-girder with variable width up to 38.1 m that reaches the entire cable-stayed section. This fact makes it the widest bridge in South America in its typology (concrete box-girder bridge with central stays), placing it among one of the widest of this type in the world, and in the longest cable-stayed span in Colombia and one of the world’s largest in its typology.
The access viaducts were made using M.S.S., manufactured by BERD ex profeso for this bridge, which executed the 16 m wide drawer section, while a wing traveller completed the lateral wings 3 spans behind.
The cable-stayed section was executed by means of symmetrical equilibrated cantilevers from the pylons by using traveller formwork manufactured by CONSTRUGOMES, which were able to execute the central box girder of 16 m wide by means of 10 m long segments and weighing up to 535 t , one of the largest executions in the world in this type of bridges.
We are extremely proud of the great work done by our great team during the almost 5 years that we have been working with SACYR and we want to congratulate all the great professionals of all the companies that have participated in this great work.
(Photos Courtesy SACYR)