A major milestone has been reached on the HS2's high speed rail link project in London.

After a nine-month demolition of the former carriage sheds at Euston station, the site of approach tunnels for the London's HS2 terminal was revealed.

CSJV managed the demolition works along with Keltbray. Specialist teams used drones to survey the inside of the Victorian structure, before taking the fragile roof structure apart. In total, more than 7,000 glazing panels had to be removed from the 250m long building. The team then used cranes to remove the 27 large 50m-long steel trusses which supported the ceiling.

At Euston, HS2 will deliver eleven new platforms in two phases, more than doubling capacity at the station, as well as providing a new concourse and expanded Underground station, linked for the first time, to the nearby Euston Square tube station.

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Twin 13 mile (21km) long tunnels, the biggest tunnelling project since Crossrail, will take the 360km/h trains out of London via a new station at Old Oak Common linked to Crossrail. At the southern end, a tunnel portal will be built on the site of the carriage sheds, just south of Mornington Street Bridge.

Tunnelling teams are now expected on site next year.

Welcoming the progress, HS2's London Programme Director, Rob Carr said: "The demolition of the old carriage sheds marks an important step forward for the project, clearing the way for the start of construction works next year, and the delivery of one of the most exciting new stations on the HS2 route. I'd like to congratulate the team on a job well done and look forward to moving ahead to the next stage of the project."

Peter Jones, CSJV Programme Director, added: "The CSJV team, consisting of people employed from the local area and other experienced professionals, alongside Keltbray have worked carefully and efficiently to ensure that this structure has been demolished safely. It marks a great milestone in the construction of HS2 and shows the fantastic progress that we are making in Euston and across Area South."

(CM/MH)