The bridge won the Institution of Civil Engineers (ICE) 200 Special Project Award at the organisation’s Robert Stephenson Awards, which recognise engineering excellence in North East infrastructure projects.

Tony Dempsey

Tony Dempsey

Director
Client
Farrans Victor Buyck Construction JV
JV Partner
Buro Happold Consulting Engineers
Location
Sunderland, UK
Value
£120m
Market

Summary

Roughan & O’Donovan provided consultancy services - from tender through to completion of construction - for the permanent works structures on this large scale infrastructure design and build scheme.

Solution

The bridge crossing comprises a 24m wide steel concrete composite deck construction cable, supported over 240 metres from a steel A-frame pylon, with sections of concrete and concrete/steel composite construction.

  • 105

    Height in metres of the bridge pylon
  • 1550

    Weight in tonnes of the bridge pylon
  • 15

    Number of hours it took to raise the pylon

Structures

Major and minor structures designed to facilitate the scheme construction included:

  • 140m long x 25m wide piled basal mattress
  • Reinforced earth wall retained embankment up to 9 metres in height
  • Retaining walls of sheet pile, contiguous bored pile and reinforced earth construction

The bridge pylon was fabricated in one piece off-site.  It was then towed by barge into the Port of Sunderland.

Challenge

The raising of the bridge pylon marked the culmination of 2 years of design and planning and 12 months of fabricating.  A highly complex process, it required stringent geometric control and monitoring procedures.  

Not one critical trigger level was reached during the launch, which is testament to the joint venture's expertise in the design and interface co-ordination of complex permanent and temporary works on major bridge structures.

Services provided:

  • Bridge engineering design
  • Structural engineering design
  • Geotechnical
  • Temporary works
  • Electrical
  • Lightning protection
  • Road engineering design services