Consultants Ramboll and Parsons Brinckerhoff have won a contract to carry out preliminary design work on Transport for London’s (TfL’s) structures and tunnels investment portfolio.
This has been estimated at around £200M.
First up will be work package three - strengthening of the 11 remaining spans of the Hammersmith Flyover needing treatment following emergency strengthening last year. This will be carried out at the same time as package two which includes work on the A406 Fore Street Tunnel and Chiswick Bridge on the A316.
The consultants will develop the designs with input from contractors, which are due to be appointed to an early contractor involvement framework contract.
TfL is currently evaluating bids from Balfour Beatty, Skanska, Costain, Hochtief, Bam Nuttall, John Graham and Volker Civils. Successful bidders are expected to be named in early in April.
“Designers usually spend several years doing preliminary designs before contractors are appointed, but we’re changing things a little by bringing contractors in early to help with design development,” said TfL roads director Dana Skelley.
“There is a lot of design work to be done by our consultants building up project feasibility over a portfolio with a very varied range of work,” she added. “Some schemes will require more heritage input, others will be heavier on the engineering. We need a lot of flexibility from the design teams and contractors, so that we can get issues of land and utilities dealt with and constraints identified early.”