Here’s some more from the architects:CAN GILI FOOTBRIDGE OVER THE BV-1432 HIGHWAY IN GRANOLLERS
The construction of this footbridge is an old claim of the inhabitants of the two neighbourhoods separated from one another by the trench of the BV-1432 road. These two residential areas, Terra Alta on the south bank and can Gili on the north one, have a different nature: can Gili is a dense zone with shops and community services, but no green areas, and Terra Alta is a low density urban area, with a community park, but with no services.
For these reasons, at the beginning of 2001 the Granollers Borough Council commissioned Alfa Polaris (http://bierot.net) to carry out the concept design and the detailing document of a new link between these two urban areas.
The design of the proposed link, a footbridge next to the junction of the Sant Ferran St. with Verge de la Mercè St. and Sant Marc St. at the Terra Alta side, was strongly conditioned by the asymmetric shape of the cross section of the road trench. The team, led by structural engineer Xavier Font, looked for a design that highlighted this asymmetry marked by the different level of the two banks —Terra Alta’s bank is 4.3 metres higher than can Gili’s one— and the presence of a small platform in the middle of the south cutting of the trench.
On the deck the street lighting is provided by means of twelve LED lamps, supported and protected from vandalism by means of Corten steel shelters fixed to the inner webs of the main structure. Additional lamp columns, with stainless steel stems, were installed on both approaches.
In 2009 the Granollers Borough Council got the necessary funds to build the scheme, and subsequently Alfa Polaris was commissioned to carry out the site supervision.
The construction of this footbridge started in June 2009. The upgrading of the south approach, at the Terra Alta’s side, as well the micropiled foundations of the abutments were first made. Next, the stems were built. Meanwhile the steel deck was being fabricated in Ripollet, 20 kilometres away from the site.
When the abutments were finished and the bearings put into place, the steel structure was transported to site and lifted. Eventually, meanwhile the north approach was built, the polymeric timber paving was placed and the street lighting as well as the street furniture installed in order for the footbridge to be open to the public at the beginning of 2010.
Client: Granollers Borough Council
Ricard Ros Puig
Daniel Barrachina Rodríguez
Architectural design firm: Alfa Polaris S.L.
Xavier Font Solà
Structural engineering firm: Alfa Polaris S.L.
Xavier Font Solà
Ernesto A. Williams
Joan Julià Riera
Street lighting engineering: GESA Gestió d’enginyeria, serveis i arquitectura
Jordi Rodríguez Martí
Daniel Ruano Rubia
Site supervision: Alfa Polaris, S.L., Xavier Font Solà
Main contractor: ACSA, Obras e Infraestructuras, S.A
Albert Font Palomera
Francisco Javier Castilla Marañón
Andreu Iglesias Navarro
Steel contractor Talleres Plain, S.A.
Cost: 574,400 €
Location: Borough of Granollers
Typology: 40 metre long continuous cranked structure with a main span of 32.7 metres
Deck: Corten steel
Abutments: reinforced concrete
LED lamp supports on the deck: Corten steel
Lamp columns on the approaches: Stainless steel
Handrails: Stainless steel and painted steel
Litter bins (street furniture): Galvanized steel and painted steel
Deck paving: polymeric timber
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