HS2’s Colne Valley railway viaduct reaches construction halfway point

Construction of HS2’s long Colne Valley railway viaduct in west London has reached the halfway mark, with the railway deck now assembled on 28 of the supporting piers.
Colne Valley viaduct (c) HS2
Construction of its 56 piers to carry the deck across land and water began in December 2021. For the past 18 months, a massive launching girder has been working its way south across the valley, one pier to the next, to lower and fix into place the viaduct’s deck segments.
Weighing up to 140