Atkins has won the design contract for the proposed Croydon Area Remodelling Scheme (CARS), New Civil Engineer understands.
Network Rail has said the project was the central part of its Brighton Main Line upgrade programme which would deliver major improvements in punctuality between London, Gatwick Airport and the Sussex coast.
Work on the project will involve the design of two additional platforms, a potential over-site development at East Croydon station and the design of a new flyover to create grade separation of junctions in the Selhurst triangle, removing the “Croydon bottleneck”.
Atkins, together with architect Weston Williamson, will also take the scheme through the Transport and Works Act order process.
The value of the contract is as yet undisclosed.
The line, which is operated by Southern and has one of the worst service performances in the country, has been plagued with delays and cancellations caused by infrastructure failures.
Funding for the 18-month long design part of the scheme was confirmed by the Department for Transport (DfT) earlier this month. However, as it will be a major enhancement project, funding for construction is yet to be obtained and is likely to be applied for outside of the regulatory control periods.
Last month it was announced there was an allowance of £1bn in the control period 6 (CP6) budget to develop new enhancement projects to a point of cost certainty prior to tendering. The measure was brought in, in response to criticism over underdeveloped schemes at the point of tender leading to the cost overruns, delays and cancellations of enhancement projects which plagued CP5.
The contract is expected to be finalised imminently.
In January, Network Rail awarded £300M worth of contracts for the first phase of works is an upgrade to the southern end of the Brighton main line focused on four Victorian tunnels, stopping leaks and providing reliable drainage away from the tracks. The track, third rail power system and signalling will all be replaced or upgraded.
Network Rail declined to comment.