The invitation to tender includes the design and build of major station improvements at Romford and Ilford as well as improvements at stations including Forest Gate, Goodmayes, Harold Wood, Gidea Park, Chadwell Heath and Brentwood.
Platform extensions will allow longer, higher capacity trains to run, and new lifts to enable step-free access will be installed at many stations along the route, Crossrail stated. The design phase will commence in early 2014 and main works will take place between late 2014 and 2017.
Other works will include infrastructure improvements, such as extra train stabling capacity and turnback facilities that will improve the reliability of passenger services.
