Project Description:
New bridge over the Río Negro in the Pueblo Centenario – Paso de los Toros by-pass, it is bridge No. 150 built by Saceem. It has a length of 550m made up of 22 sections of 25m. The deck is made up of a prefabricated pre-slab and in-situ concreting, giving a total of 24cm of deck thickness. The deck is supported by four prefabricated prestressed longitudinal beams 25m long and 1.3m high. The total width of the deck slab is 11m, with 10.20m of roadway and New Jersey barriers on both sides. In total there are 5,000m3 of concrete.
Detail of the elements that make up the bridge:
Foundations
Two types of foundations will be made, piles in the channel area and reinforced concrete footings at the ends.
– Piles: in the 9 water porches, piles of 1.20 m in diameter to the rock roof (6m high approx.) and 1.05 m in diameter from the rock roof inwards (8m high approx.)
– Footings: in the remaining 14 porticos, reinforced concrete footings measuring 4.20 x 4.20 x 1.20 on the Montevideo side and 3.80 x 3.80 x 1.20 on the Paso de los Toros side.
Longitudinal beams
The longitudinal beams are 1.3m high and 25m long. They are prefabricated and prestressed. They are assembled, formworked and concreted in the prefabricated plant.
The assembly of the beams is carried out using cranes. In the water area, the beams will be transported on pontoons to the placement area. The cranes will also be supported on pontoons.
Board
The deck is made up of prefabricated prefabricated slabs and on-site concreting on them.
The pre-slabs are placed on the longitudinal beams and transversely to the axis of the bridge. These are prefabricated in the workshop and then assembled on site.
CVU
