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"Juan José Arenas" Bridge
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DESCRIPCION

With the aim of improving the connections between the "Constitución" and "Los Castros" Avenues, the Santander council entrusted to Arenas&Asociados the undertaking channeled to achieve that objective. For bridging the gap of "Las Llamas" valley, where is placed the Atlantic Park, Arenas&Asociados proposed a through concrete arch bridge. The arch, slender, with variable depth, real shell vault, has turned into the gates of the Atlantic Park, a matchless framework of the "Picos de Europa", which can be regarded from there. It should be point that the city council, in homage to the professional and docent career developed by Professor Arenas from the Cantabria capital, decided to name the bridge "Juan José Arenas".
The bridge cross “Las Lamas" Valley, which is largely occupied by the Atlantic Park, a new built up area in the city of great architectonic, ecological, and landscape interest. 

The commitment consisted in proposing a series of actions channeled to a functional improving of the area, through the traffic redistribution by a transversal connection between the two principal avenues separated by a fracture in the territory, "Las Llamas" Valley. Is in that connection where the "Juan José Arenas" bridge is integrated, crossing over the valley with a span between the abutments of 102 m.
Through arch bridge, its arch is developed over the deck in the 60 central meters, continuing under the deck as inclined straight feet until meeting the supports, materialized in inclined plastic hinges, oriented by the edges of those inclined feet, being the lengthwise separation between them 81'6 m.
The bridge in projected entirely in concrete, being the deck organized into a central hollow box girder and two lateral cantilevers. The central box is 5.8 wide and 2.25 m in deep, while the cantilevers, conceived as precast slabs of 9 m large, have skylights with light projectors to illuminate tha ground level under the bridge. Over the cantilevers, a slab is materialized with 25cm of depth, being on its exterior sides the sidewalks made technological wood composite decking.
The central reservation, where the arch is opened forming a vault with an opening in each end, as a bicycle path, will give access to most parts of the city. The depth of the arch is variable from the keystone to the final supports, being that mentioned depth in the keystone 72 cm, and i120 cm in the supports. The elevation of the arch over the deck is 7'8m, where 18 pairs of stainless steel stays are hanging, placed lengthwise every 2.4 m.
Finally, it should be underline that this bridge pretends to be, more than a connecting link between two vials, a balcony over the Atlantic Park of "Las Llamas" Valley.

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CATEGORIES

Movable Bridges

Urban Bridges

Rail Roads Bridges

Footbridges

Rehabilitations

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Arenas & Asociados - 2012