HS2 tunnel segments on the move from Hartlepool to London

Deliveries of HS2’s tunnel segments have begun from Hartlepool, using the UK’s rail network to minimise road traffic and drastically reduce carbon emissions. STRABAG, the company manufacturing the pre-cast concrete segments for HS2’s next London tunnel drives, opened a factory in the town earlier this year. The new factory has direct access to the rail network through a rail head that had not been used in over 15 years.

STRABAG have made a significant investment in Hartlepool, re-developing an old oil-rig fabrication site into a modern automated precast concrete facility which is initially being used to support the HS2 project in the UK. The HS2 contract has helped create over 100 jobs for local people, including a number of people who were previously unemployed.

The investment has extended to the rail head which runs alongside the factory, working with Network Rail to bring the disused line back into service and connecting it to the UK rail network. STRABAG are also utilising the local supply chain, sourcing aggregate from local quarries and using UK recycled steel.

HS2’s London tunnels contractor, Skanska Costain STRABAG joint venture (SCS JV), will receive the segments at is London Logistics Hub which is near to Willesden Junction. From there, the segments will be transported to Victoria Road Crossover Box in Acton. The segments will be used to construct the Northolt Tunnel East, a 3.4-mile twin bore tunnel drive from Victoria Road in Acton to Greenford. At Greenford, the tunnel will connect to the Northolt Tunnel West, and combined will complete the 8.4-mile tunnel taking HS2 services from Old Oak Common Station to the edge of the capital.

The next two Tunnel Boring Machines (TBMs), named Emily and Anne, will be launched by SCS JV in the new year. They were recently lowered into the ground using a 750-tonne crane and blessed by a local priest.

The freight trains, operated by Freightliner, can carry up to 20 segment rings for the tunnels, which will be used to build 38 metres of tunnel. Each train which makes the seven hour journey from Hartlepool to London will remove the need for 40 lorries on the UK’s road network, reducing congestion and carbon emissions. Trains will run six times a week between Hartlepool and London.

STRABAG have also been awarded the contract to supply the segments for HS2’s Euston tunnel between Old Oak Common and Euston. Following the government’s Network North announcement in October, alternative funding arrangements for Euston are being considered. For both the Northolt Tunnel East and Euston Tunnel, over 83,000 precast tunnel segments will be produced.  Each ring has an 8.8 m outside diameter, is 35 cm thick and weighs seven tonnes.