It is the first structure to use curved beams and a 600-meter long and 12-meter high pile wall
Constructora MECO handed over the new overpass in Paso Ancho to the Costa Rican State. This priority work was built to streamline the traffic in the city of San José, specifically in the beltway route where an estimated 90,000 vehicles pass daily.
The work consists of a 6-lane viaduct, 2 semicircular bridges, ramps and exits of the roundabout.
This overpass also means an important breakthrough for the country, because it is the first structure to use curved beams and a 600-meter long and 12-meter high pile wall, which makes it a unique work.
The Paso Ancho interchange incorporates innovative construction systems which allowed to give permanent access to drivers in 2 lanes, despite having two particularly complex tasks: the excavation of the viaduct and the construction of the walls.
With an investment of nearly $ 500,000 in occupational safety and health, the constructive process obtained a zero-accident record over 23 months of work. This amount included personal protective equipment, environmental services, day and night signaling, as well as ongoing maintenance.
A work of great proportions
The construction of the Paso Ancho overpass involved:
- Remove 118 thousand cubic meters of material from the old Paso Ancho roundabout (the initial estimate increased by 48 thousand cubic meters, since the work was planned to run during the dry season and it was actually executed during the rainy season, which forced to work in wet and less compact soils)
- 9800 trips trucks were required to transport the material to private soil landfills in Tres Ríos, Desamparados and Pavas for proper disposal.
- The work also required participation of 240 direct employees and 200 heavy-load vehicles, including crawler tractors, bulldozers, excavators, soil compactors, dump trucks, heads, asphalt distributors, pavers and piling rig equipment, among others.
- 4200 meters of active anchors supporting the 3500 square meters of pile wall.
Elementary Raw Material
The underpass of Paso Ancho required strict planning and execution of materials, which include:
- 5000 cubic meters of concrete
- 500000 kilograms of steel
- 45000 cubic meters of material transported from the pit
- 6000 tons of asphalt
- 170000 kilograms of structural steel for superstructure bridge beams
Valuable contribution to the community
The Paso Ancho interchange is a work done with the MECO seal, where in addition to the constructive part, the community and its environment were also involved.
Drivers will be able to see 4 mural paintings, located on the lower level of the road. This contribution from Constructora MECO seeks to embellish public infrastructure with art, and thus turn it into artistic expressions that reflect the community life on the concrete walls surrounding the underpass.
With this social responsibility project, MECO seeks to bring together public infrastructure with art. The mural is a form of creative expression and these works embellish the public spaces with art, leaving trail of the colorful social variety of the residents of Paso Ancho.
The murals are the work of the national artist Luis Guillermo Fournier, and the 4 mural paintings have a total coverage of 528 mts².
Park cleaning and improvements
Thanks to a volunteering day, Constructora MECO, removed debris from the park in Los Geranios neighborhood, located near the works, and also installed better spaces for interaction and enjoyment of the residents.