The opening ceremony for the new section of the A-63 motorway, built by ACCIONA Construction, connecting the towns of Dorigo and Cornellian, Asturias, took place on 26 December and was attended by the Minister of Public Works and Transport, Iñigo de la Serna.
The official event was also attended by ACCIONA Construction General Manager for Spain and Portugal, Justo Vicente, and the head of ACCIONA Construction’s Asturias department, Eduardo Montes.
The 2,300-metre section that was commissioned is located in the town of Salas. It includes five structures -three gantry-type underpasses, one underpass with Artesa-type precast beams and one overpass over the river Nonaya-, as well as an 820-m intersection connecting a roundabout in Cornellana to the N-634 highway.
The most significant structure in this section is the viaduct over the river Narcea. This singular structure is 875 m long and 75 m high from the valley floor. It has six columns and seven spans, the longest of which stretches 175 m over the riverbed. The width of the deck is 23.20 m, wide enough to fit both carriageways on the same structure. The deck was built primarily using a progressive cantilever technique, enabling a large part of the viaduct to be constructed from above, without falsework, reducing environmental impacts below the structure.
The total budget for the new section, built by ACCIONA Construction, is €44 million. Following the official commissioning ceremony, the Minister of Public Works and Transport also visited the work underway on the Cornellana-Salas section. These two projects provide continuity to a vital transport infrastructure in the Principality of Asturias.