The deal also involves the design for the new Abbey Wood station, which is the terminus station on the south east section of the Crossrail route.
A four-track railway will be created requiring Network Rail to improve five bridges and build two new overhead electrified railway lines between Plumstead portal, where the central tunnel section surfaces, and Abbey Wood.
Network Rail is responsible for the design, development and delivery of the parts of Crossrail that are on the existing network, covering 70km of track and 28 stations from Maidenhead in the west to Abbey Wood and Shenfield in the east.
Robbie Burns, programme director at Network Rail, said: “The transformed Abbey Wood station will act as a catalyst for the regeneration of the surrounding area and provide opportunities for local employment, meeting the development aspirations of the two London boroughs it will serve, Greenwich and Bexley.”
Peter Anderson, Balfour Beatty Rail managing director, added: “Our integrated team will be led by Balfour Beatty Rail and supported by skills from across the Balfour Beatty Group including Parsons Brinckerhoff, Mansell, Balfour Beatty Regional Civil Engineering and Balfour Beatty Engineering Services.”