The two consultancy firms will work in partnership to develop designs for reconstruction and refurbishment work on a number of TfL structures and tunnels during the next few years.
This work is part of TfL's wider £3.8bn investment into the capital's road network in the next 10 years. The portfolio, which will cost around £200m to deliver, has been split into three work packages.
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 consists of 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 re-strengthening works last spring.
The construction works are currently being procured under an early contractor involvement (ECI) framework contract.
TfL will be working with Ramboll and Parsons Brinckerhoff on these projects until they are completed in 2016, and will be appointing principal contractors for these schemes in March 2013.
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.”'
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