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    London Borough of Hounslow


    Chiswick, South London



    This new pedestrian bridge in Chiswick, is positioned beneath the Grade II listed Barnes Bridge and rejuvenates a previously disconnected stretch of the Thames Path, dramatically improving safety, access and pedestrian flow.

    The low-carbon structure utilised off-site prefabrication in Tilbury, Essex, as well as the river itself for transportation and installation of the largest of the bridge spans. An aim of the project has been to reduce environmental impacts and carbon emissions with energy efficient lighting designed to protect the fragile ecosystem within Dukes Hollow. With robust finishes in stainless steel and aluminium, the structure anticipates future flooding and reduces the maintenance required over its expected 100+ year lifetime.

    The structure is a ‘half through’ truss form with distinctive bracing members angled to maximise oblique views to the river. Estimates show innovation in material specification and construction technique between design and completion have enabled a 50% reduction of carbon emissions associated with the trusses, and a 30% reduction in the footbridge’s overall carbon footprint.

    The meandering alignment of the trusses facilitates views up and downstream, as well as into the adjacent Dukes Hollow nature reserve – one of the few remaining natural tidal habitats in London. In addition to linking the Thames Path and providing access to the adjacent sports grounds and rowing clubs, the design also respects surrounding ecology by carefully integrating the structure into landscaped banks on either side of Barnes Bridge. The open truss parapets that enable views from the bridge, also allow views through to the dense vegetation when seen from the Barnes side of the river.

    The 115m long structure is divided into four ambitiously slender spans that hug the shoreline, touching down on discrete piers that provide a minimal footprint within the tidal zone.


    our sectors

    Knights Brown was a great client to deal with. We felt from the very outset that they worked with us rather than for us, demonstrating real collaboration in order to minimise disruption to the port. The works were also delivered through a very challenging time, with the latter stages coinciding with the COVID-19 pandemic. Their approach to this was thoroughly professional, with health and safety the primary consideration. Working practices were strictly amended and monitored, with the project completed to the satisfaction of all involved.

    - Anisa Koci Port Master Plan Project Manager at Portsmouth International Port

    This complex and challenging project was a collaborative undertaking from the outset. Combining two projects was inspirational, saving not only money but diverting 22,000m3 from landfill. Some extremely innovative tools and methods were used to demolish the pier, recover material and to achieve the lowest environmental impact on one of the most environmentally designated places in the UK.

    - London and South East Constructing Excellence Awards judging panel on Phase 2 of the North Portsea Island CFERM