United Kingdom, March 30 -- Balfour Beatty VINCI, HS2's construction partner in the West Midlands, is preparing to launch the second viaduct over the M6, marking another major milestone in the delivery of the UK's highspeed rail network. Engineers are gearing up to move the west deck of the M6 South viaduct, which is currently being assembled in four sections near Chelmsley Wood. The first 107metre section will be slid into position over the M6 junction 4 southbound slip road , using a specialist hydraulic jack to manoeuvre the 1,250tonne weathering steel structure across 102 metres onto its concrete piers. Once installed, the west deck will sit parallel to the 320metre east deck, which was safely launched over the M6 in three stages in 202...