Crossrail Limited, a UK company set up to oversee the £16bn Crossrail project has marked the beginning of the procurement process for the raill project by inviting bids for two major tunnelling works.
Tenders have been published for work on 18km of the 21km, 6.2m-diameter bored tunnels required for the project.
The first westbound tunnel work consists of building a 6.2km-long tunnel from Royal Oak through to the new Crossrail Farringdon station.
The second eastbound tunnel includes building an 8.3km-long tunnel from Limmo Peninsular through to the new Crossrail Farringdon station, a 2.7km-long tunnel from Stepney Green through to Pudding Mill Lane and a 0.9km tunnel at Limmo Peninsular through to Victoria Dock Portal.
The contracts are expected to be awarded by mid-2010 and work is expected to take 66 months.
The opening of the tender marks the beginning of the procurement process for the construction of the Crossrail project.
The project, expected to be finished by 2017, will see 12-carriage trains travelling under central London linking Heathrow and Maidenhead in the west to Shenfield and Abbey Wood in the east.