Sector Transport infrastructure
Project type New build
Services provided Product / system manufacture
Product / system supply
Installation
Year completed 2017
Project location South East England
Consultant Bush Consultancy (architect)
 
 

Context

Finzels Reach footbridge is a £2.7m footbridge across Bristol’s floating harbour, which allows pedestrians and cyclists a route to the new Finzels Reach development in the city.

The bespoke curved bridge has a span of 91m and is 4m wide and adds a new dimension to the Finzels Reach project.

The unusual sinuous shape of the bridge was designed to maximise the length of the structure - this allows the minimum gradient on the bridge from either side while maintaining the necessary clearance over the navigable section of the watercourse.

Work undertaken

CTS was approached directly by the client and architect to create a structural solution to their architectural concept.

The rising 'S' shape of the bridge brought about challenges during the design, modelling and cladding process of the project - the spiralling effect could be realised in manufacture but not fully realised in the model. Therefore careful detailing and consideration of each of the subsequent elements had to accommodate increased tolerance to account for and manage unknown offsets and interfaces for all parties.

The complex geometry posed challenges as the plan curvature generated a low natural frequency structure easily excited by joggers. CTS’s early involvement meant that vibration was identified at concept as being a critical design parameter.

A vibration specialist, Full Scale Dynamics, assisted with the design, manufacture and installation of a bespoke tuned mass damper to position in the longest most eccentric span to ensure comfort parameters were met for all bridge users.

The bridge combined:

  • painted steelwork
  • hardwood decking with anti-slip inserts (Hi-Grip Excel by CTS Bridges)
  • hardwood handrail with stainless steel parapet infill
  • lighting and cladding

The completed eye-catching superstructure was installed in time for the official bridge opening on 6th April.


Context

Finzels Reach footbridge is a £2.7m footbridge across Bristol’s floating harbour, which allows pedestrians and cyclists a route to the new Finzels Reach development in the city.

The bespoke curved bridge has a span of 91m and is 4m wide and adds a new dimension to the Finzels Reach project.

The unusual sinuous shape of the bridge was designed to maximise the length of the structure - this allows the minimum gradient on the bridge from either side while maintaining the necessary clearance over the navigable section of the watercourse.

Work undertaken

CTS was approached directly by the client and architect to create a structural solution to their architectural concept.

The rising 'S' shape of the bridge brought about challenges during the design, modelling and cladding process of the project - the spiralling effect could be realised in manufacture but not fully realised in the model. Therefore careful detailing and consideration of each of the subsequent elements had to accommodate increased tolerance to account for and manage unknown offsets and interfaces for all parties.

The complex geometry posed challenges as the plan curvature generated a low natural frequency structure easily excited by joggers. CTS’s early involvement meant that vibration was identified at concept as being a critical design parameter.

A vibration specialist, Full Scale Dynamics, assisted with the design, manufacture and installation of a bespoke tuned mass damper to position in the longest most eccentric span to ensure comfort parameters were met for all bridge users.

The bridge combined:

  • painted steelwork
  • hardwood decking with anti-slip inserts (Hi-Grip Excel by CTS Bridges)
  • hardwood handrail with stainless steel parapet infill
  • lighting and cladding

The completed eye-catching superstructure was installed in time for the official bridge opening on 6th April.


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Downloads
  • Case study: Finzels Reach, Bristol
    Case study: Finzels Reach, Bristol
    3pp 1.12MB
    Download
  • Hi-Grip timber decking
    Hi-Grip timber decking
    1pp 1.34MB
    Download
  • Steel and timber bridges
    Steel and timber bridges
    4pp 1.5MB
    Download
 
 
 
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91m-long curved footbridge - Finzels Reach, Bristol