HS2 have confirmed that two giant tunnelling machines are 75% of the way through the 10 mile long Chiltern tunnel.
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HS2 has revealed the final design for the North Portal of the Chiltern Tunnel, the last of seven key design elements for the project’s longest tunnel.
HS2 have confirmed that two giant tunnelling machines have passed the halfway mark during the excavation of the 10-mile-long Chiltern tunnels.
HS2 have finished installing the 292 concrete piles that will form the foundations for bridge at the 2.1-mile Colne Valley Viaduct.
HS2 have reached a major milestone as they begin work on the UK’s longest railway viaduct on the outskirts of London.
HS2 have revealed designs for the north portal, which cuts noise from trains entering and exiting the Chiltern Tunnel at speeds of up to 320km/h.
HS2 has begun production on 1,000 concrete segments that will form the deck of the Colne Valley Viaduct, the UK’s longest railway bridge.
HS2 has unveiled the first plans for the final ‘barn design’ headhouses, as construction has begun to provide emergency access to the 10-mile-long Chiltern tunnel.
Engineers working on Britain’s new high-speed railway have begun excavating the first of five shafts that will provide ventilation and emergency access to the 10-mile long tunnels they are digging under the Chiltern hills.
HS2's second tunnel boring machine, 'Cecilia', will operate alongside an identical machine, named ‘Florence’, to excavate separate northbound and southbound tunnels.
In a landmark moment for the project, HS2 Ltd will launch the first tunnel boring machine from HS2’s South Portal site on 13 May 2021.