The job to design and install track and tunnel equipment is the last major construction contract to be awarded by Crossrail.
The joint venture beat rival shortlisted bidders Balfour Beatty Rail and a BAM Nuttal/Ferrovial Agroman/Kier Construction joint venture to take the prized M&E project.
The deal is expected to be confirmed along with the contract price next week. It adds to a strings of contract wins for Costain on Crossrail including tunnel portals, ventilation shafts and Bond Street and Paddington stations.
Andrew Wolstenholme, Crossrail chief executive said: “Tunnel fit-out is one of the largest contracts to be let by Crossrail and will create hundreds of new job opportunities as well as providing a welcome boost to regionally-based manufacturers and suppliers.”
Costain will be required to create around 50 new apprenticeships and new job start roles for Londoners who are long-term unemployed or out of education or training for six months or more during the life of their contract.
By late 2014, construction of over 21km of twin-bore tunnel, stretching across the capital via central London and Docklands, will have been completed. To-date over 7km of new tunnel has been constructed under London.
As construction concludes, work will get underway to fit-out the tunnels with the necessary track, overhead power equipment and services to enable Crossrail trains to operate from 2018.
M&E fit-out spec
The C610 Systemwide main works contract incorporates the C630 Tunnel Mechanical & Electrical Systems contract.
When C610 works begin, the contractors providing high-voltage power, communication and signalling systems will work alongside the Costain team to complete the fit-out of the tunnels.
This will include the installation of over 40km of track, overhead electric conductor rails to power the trains as well as ventilation and drainage systems.
The new Crossrail tunnels will also require 48 ventilation fans, 40km of walkways, 66 drainage pumps, 40km of fire mains as well as lighting throughout the entire length.
The fit-out works will be carried out within the entire tunnelled section of the Crossrail route between Royal Oak, Pudding Mill Lane and Plumstead Portals.