26th April 2017
Following the HS2 Act 2017, works started on the new railway, with a large construction site south of Maple Cross that will be used to create the 13km Chiltern tunnel which starts under the M25; and the Colne Valley Viaduct (3.3km long), which starts at a launch over the A412 Denham Way. Full details of the scheme are available here.
Please see the link below to some of the construction work being undertaken for HS2:
- August 2020 Update: https://mediacentre.hs2.org.uk/news/progress-at-chiltern-tunnel-site-as-hs2-prepares-for-arrival-of-first-tunnelling-machines
- If you have any questions or concerns, please contact the HS2 enquiries helpdesk on 020 7944 4908 or by emailing HS2enquiries@hs2.org.uk.