This restful but impressive bridge allows the Asturias to Galicia road to cross the deep Cubo River valley.
With a span of 190 m, the concrete hollow-box cross section arch supports the deck, playing the role of solid ground.
The construction procedure was based on the idea of creating a great-depth cantilever truss combining the arch, the steel deck and the vertical piers, with provisional diagonal double T shaped steel profile ties, for which new hydraulic jacks were designed in order to be able to adjust their tension in every stage of the construction process.
The last step of the construction procedure consisted in the introduction of the horizontal thrust between both half-arches by means of hydraulic devices and the progressive operations of loosening and dismounting the provisional ties.
In its final situation, the arch transmits a deep feeling of quietness and safety, derived without any doubt from its mass and shape and from the naturalness of the vault resistant mechanism. As engineers, we know that the permanent compressive state of stress associated with this mechanism favours durability, a value of the highest social importance in great public works.
