The Ilford Yard stabling project will house some of the 60 new trains required to run on the Crossrail route.
The contract covers the provision of additional stabling facilities at the existing Ilford Depot which is located between Ilford and Seven Kings.
Work will involve alterations to a number of existing buildings at the site and construction of ten new sidings to house trains overnight.
The full list of bidders for the contract known as C828 was:
· Balfour Beatty Construction Scottish & Southern Limited
· VINCI Construction Limited
· VolkerFitzpatrick Limited
Construction will start this summer and is due for completion in 2016