HS2 contractors have completed work on a pair of innovative extensions to the southern portal of its longest tunnel to eliminate the possibility of ‘sonic boom’ being created by high-speed trains entering at 200mph. The structures, built at the southern end of the railway’s 10-mile Chiltern Tunnel to the north-west Read more…
HS2’s 3.4km long viaduct across the Colne Valley recently won in the engineering category of the Fine Art Commission Trust’s third annual Building Beauty award. Four members of the delivery team from HS2 Ltd, its main works civil engineering contractor, Align, and viaduct architects Grimshaw accepted the award on behalf of Read more…
The second giant boring machine (TBM) building HS2 under the Chiltern Hills has now broken through at the tunnel’s northern portal, completing a journey that began in June 2021. Named Cecilia, the TBM has driven for 10 miles underground to join twin sister machine – Florence. She arrived at the Read more…
The first Tunnel Boring Machine (TBM), launched almost 3 years ago, broke through under the Chilterns recently, having excavated the longest tunnel on HS2 at 16km. TBM Florence is one of 10 machines excavating the 32 miles of tunnel on the new railway linking London Euston with Birmingham and was Read more…