HS2’s giant bridge building machine swings into action – video

Construction has started on the Colne Valley Viaduct as a 160m-long enormous bridge-building machine launched the first deck segment.
A 7,000t launching girder will install 1,000 individual segments across the 3.4km long viaduct route across a series of lakes and waterways between Hillingdon and the M25.
Originally built in 2004, the launching girder was first used during the construction of the Hong Kong East Tsing Yi Viaduct.Specially designed to handle complex viaduct construction, the machin