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Five qualify for TfL structures and tunnels £200m framework

Five contractors are expected to be confirmed as winners of a framework this week under which £200 million of reconstruction and refurbishment work will be carried out on eight Transport for London structures and tunnels.

There are three works packages due to be delivered under an early contractor Involvement framework, including improvements to the Hammersmith flyover, which was closed in December 2011 after serious structural defects were found.

Balfour Beatty, Bam Nuttall, Costain, Hochtief and Skanska are expected to be confirmed as the framework contractors at a TfL Finance and Policy Committee meeting on Wednesday.

TfL will then select contractors to carry out construction in three work packages under call-off contracts.

A total of 29 pre-qualification questionnaires were completed by suppliers for the works, and Ramboll and Parsons Brinckerhoff were appointed as engineering consultants in January.

The first package includes work on the A127 Ardleigh Green Railway Bridge, A1 Highbury Corner Bridge, A406 Power Road Bridge and A1 Upper Holloway Bridge, for which seven suppliers were shortlisted.

Refurbishment and upgrades of the A316 Chiswick Bridge, A406 Fore Street Tunnel and A406 Woodlands Retaining Wall form the second work package and attracted six bidders, while there were seven bidders for work package three involving further work to strengthen remaining spans on the A4 Hammersmith Flyover.

The programme of works will commence in October 2013 with the Hammersmith Flyover. The remainder of the Structures and Tunnels Investment Programme portfolio is scheduled for completion by 2016.

Contractors will be required to appoint one apprentice or equivalent per £1m spent through the framework, which TfL said could result in more than 200 apprenticeships during the framework term.

The STIP includes strengthening, refurbishment or replacement of eight road bridges, tunnels and structures on the TfL road network that have been identified as having serious structural and safety issues.

The work is part of TfL’s wider £3.8 billion investment in the capital’s road network in the next 10 years, and forms one of six major strands of investment that will deliver vital maintenance and implement the recommendations of the mayor’s roads taskforce.

Works packages

  • A127 Ardleigh Green Railway Bridge: the three-span bridge carrying the four lanes of the A127 has substandard bridge parapets and the main deck elements are in poor condition.
  • A1 Highbury Corner Bridge: built around 1930, the bridge crosses the London Overground railway, supports the highway and hosts commercial and residential buildings. It is in a very poor condition and load restrictions are in place.
  • A406 Power Road Bridge: a three-span bridge built around 1922 that has badly corroded deck and supports. The bridge does not currently have to implement a load restriction but as deterioration continues this will become inevitable.
  • A1 Upper Holloway Bridge: a single-span bridge built around 1868. It carries the A1 Holloway Road and as the metal component continues to deteriorate, a full reconstruction is needed.
  • A316 Chiswick Bridge: built in 1933, the Grade II-listed bridge will undergo refurbishment and upgrade work.
  • A406 Fore Street Tunnel: constructed by the Highways Agency and opened to traffic in 1998, work will be taken to address water ingress, which is causing damage to equipment in the tunnel and rapid deterioration of mechanical and electrical equipment.
  • A406 Woodlands Retaining Wall: upgrade works will take place on the wall that retains the gardens of properties backing onto the A406.
  • A4 Hammersmith Flyover (Phase 2): continuing work to strengthen remaining spans.


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