HS2 in Hertfordshire
Find out what HS2 means for Hertfordshire
The 3.6km Colne Valley Viaduct will carry the HS2 route from Harefield in Hillingdon, over the Colne Valley into Buckinghamshire, before it enters the Chiltern Tunnel South Portal in Hertfordshire.
Within Hertfordshire, infrastructure such as the Colne Valley Viaduct, the Chiltern Tunnel South Portal and the Colne Valley Western Slopes will be constructed.
Benefits at a glance
Capacity - HS2 will form the backbone of our rail network
Providing much-needed rail capacity across the country, and and integrating with rail projects in the North and Midlands.
Connectivity - HS2 will help level-up the country
By offering better connections HS2 will help spread jobs and opportunity around the country, driving regeneration.
HS2 will build sustainable, climate-resilient transport infrastructure and cut carbon emissions from the UK transport sector.
What we're delivering in Hertfordshire
The two-mile long Colne Valley Viaduct is being construction by Align (a joint evnture between Bouygues Travaux Publics, Sir Robert McAlpine and VolkerFitzpatrick) as part of their 21.6km section.
More than 10 businesses in Hertfordshire are working on HS2 already. Almost two-thirds of these businesses are SMEs.
In and around Hertfordshire, three CEF projects worth almost £358,000 have already been awarded.