Sector Transport infrastructure
Project type New build
Services provided Design
Product / system manufacture
Installation
Project location East Midlands
Client Bellway Homes / Amey
Consultant Amey; Technical Approval Authority - Staffordshire County Council
Products used Cambered warren truss footbridge with overhead bracing
 
 

Context

This cambered warren truss bridge with overhead bracing provided a crucial infrastructure link to a Bellway homes site in Tamworth. Without the bridge the housebuilder was unable to release his properties for sale and CTS was approached when a particularly fast-track service was needed.

Work undertaken

CTS carried out the design in-house using their experience of similar structures to create a bridge some 60% lighter than the consultant’s scheme design that CTS had first been presented with. This benefitted both the build time and the project cost.

A Tuned-Mass-Damper (TMD) is used under the deck at the mid-span of the bridge. This limits vibrations and provides pedestrian comfort in the long span structure. TMDs for bridges are typically prohibitively expensive and are fabricated outside the UK – by bringing the TMD detail design and fabrication in-house CTS was able to make this technology affordable and deliverable within the project timescale.

The bridge crosses a Network Rail line and was subject to a Category III design procedure; CTS’ Chartered Engineers worked closely with 3rd party checkers Amey, the Technical Approval Authority at Staffordshire County Council and client Bellway to ensure a smooth approval process appropriate to the fast-paced nature of the project.

Installation was planned and carried out by CTS during a night-time rail closure using one of the largest cranes in Europe.

Outcome

Happy homebuyers moved in on time - just days after the bridge completion.


Context

This cambered warren truss bridge with overhead bracing provided a crucial infrastructure link to a Bellway homes site in Tamworth. Without the bridge the housebuilder was unable to release his properties for sale and CTS was approached when a particularly fast-track service was needed.

Work undertaken

CTS carried out the design in-house using their experience of similar structures to create a bridge some 60% lighter than the consultant’s scheme design that CTS had first been presented with. This benefitted both the build time and the project cost.

A Tuned-Mass-Damper (TMD) is used under the deck at the mid-span of the bridge. This limits vibrations and provides pedestrian comfort in the long span structure. TMDs for bridges are typically prohibitively expensive and are fabricated outside the UK – by bringing the TMD detail design and fabrication in-house CTS was able to make this technology affordable and deliverable within the project timescale.

The bridge crosses a Network Rail line and was subject to a Category III design procedure; CTS’ Chartered Engineers worked closely with 3rd party checkers Amey, the Technical Approval Authority at Staffordshire County Council and client Bellway to ensure a smooth approval process appropriate to the fast-paced nature of the project.

Installation was planned and carried out by CTS during a night-time rail closure using one of the largest cranes in Europe.

Outcome

Happy homebuyers moved in on time - just days after the bridge completion.


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Downloads
  • Case study: Warren truss footbridge bridge, Tamworth
    Case study: Warren truss footbridge bridge, Tamworth
    1pp 1.05MB
    Download
  • Warren and Pratt Truss bridges
    Warren and Pratt Truss bridges
    1pp 2 MB
    Download
 
 
 
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Warren truss footbridge over Tamworth railway