Ramboll and Parsons Brinckerhoff have been appointed as engineering consultants for a £200 million scheme that includes strengthening the Hammersmith flyover.
The consultants will begin design work for reconstruction and refurbishment on a number of Transport for London structures and tunnels during the next few years under its structures and tunnels investment portfolio, which was valued at between £100m and £300m when the OJEU was issued in May.
Among the works is improvements to the Hammersmith flyover, which was closed in December 2011 after serious structural defects were found.
The construction works are currently being procured under an early contractor involvement framework contract and TfL said the contractors “will be key to the success of the design process”.
The structures and tunnels investment portfolio was one of the key contracts to look out for, highlighted in CN’s preview of 2013.
It said: “Through early involvement, their detailed understanding of construction can be applied, enabling TfL to reduce the risks sometimes associated with this complex work.”
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 the six key strands of investment that will deliver vital maintenance and implement the recommendations of the mayor’s roads taskforce.
Structures and tunnels investment portfolio:
The portfolio, which will cost around £200m to deliver, has been split into three work packages and will mean improvements to the following structures:
- Work Package 1 consists of the Upper Holloway Railway Bridge and Highbury Corner Bridge on the A1, the A127 Ardleigh Green Railway Bridge and the A406 Power Road Railway Bridge
- Work Package 2 comprises the A406 Fore Street Tunnel, Chiswick Bridge on the A316 and the reconstruction of the woodlands retaining wall on the A406 near Golders Green
- Work Package 3 consists of the second phase of improvement works on the Hammersmith flyover, following the successful restrengthening works during spring 2012
TfL director of roads Dana Skelley said: “TfL has a strong history of ensuring that its road network remains safe, reliable and well cared for.
“Early contractor involvement enables us to achieve best value for money by getting the wisdom of construction experts at the beginning of project development, helping to remove risks which are sometimes not considered early enough in traditional delivery models.
“By using this method, we can ensure we complete these important works efficiently and successfully, with minimum disruption to London’s road users.”
TfL will be working with Ramboll and Parsons Brinckerhoff on these projects until they are completed in 2016, and will be appointing principal contractors in March 2013.