Page 22 - FCC-N06-eng

The Las Dueñas – Muros de Nalón section of the Cantábrico highway features several structures, such as the Concha de Artedo Viaduct, one of the most unique structures of this project, as well as the Santa Ana, Pieria, and Santa Olaya viaducts that were built so as not to have an impact on several streams, and the 500 meter-long Somao Tunnel and the San Juan tunnel measuring 221 meters were also built.

The Concha de Artedo viaduct has two 1,188 meter-long lanes and measures 22.80 meters in width. Some of the piles are more than 100 meters high. The via-duct crosses the Uncín River, the N-632 road, and the narrow-track railway.

It was built using 16 piles each consisting of a hollow shafts that become wider the closer they are to the road platform, crea-ting a solid concrete base featuring all the defnitive supports of the viaduct.

The platform is built using prefabricated voussoirs which were built at the manu-facturing plant and were placed along the aqueduct supported by formwork or vous-

prevent environmental impact and respect the environment were implemented.

The fsh were caught, as one of the pro-tective environmental measures, and local amphibians such as frogs, tritons, and sa-lamanders were transferred to a protected environment during the project execution phase and then returned to their natural ha-bitat once the project was completed.

It is a source of pride for us to be able to say that the work was executed 100% by FCC. The design, calculation, execution, quality control, topography, the technicians, personnel, all belonged to FCC and no-thing was outsourced, César told us. This, he said, was not usual in major projects of this type and gives us an indication of our company’s diversifcation and the professio-nalism of our people.

The viaduct is supported by 16 piles, the highest one,

the ninth going westward, measures

133.3 meters.

soir installers owned by FCC and which can measure up to 115 meters.

Due to the curves and counter-curves, no two voussoirs are alike and each is spe-cially reinforced and perfectly assembled.

Once completed, this highway section will be part of the High-Capacity Network of the Asturias Principality. Our company was previously involved in building some of these other sections of the highway.