Construction works for the HS2 Colne Valley Viaduct, which will become the UKs longest railway bridge, are pictured at HOAC Lake Harefield Lake No. 2 on 5th February 2022 in Harefield, United Kingdom. A viaduct requiring 292 piles is currently being constructed to carry HS2 across lakes and watercourses in the Colne Valley Regional Park.
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