10 Feb Work begins on HS2 rail bridge at Hillingdon

The UK’s longest railway bridge is under construction as part of the HS2 delivery.

The Colne Valley Viaduct will span 2.1 miles across a series of waterways on the Hillingdon and Hertfordshire border, eventually carrying high-speed trains between London, Birmingham and the North.

Deck segments, weighing up to 140 tonnes, are being built on-site at a giant temporary factory.

David Emms, HS2 project client, said: “We’re already making strong progress on the Colne Valley Viaduct – sinking the foundations, building the first piers, and now starting production at the new modular viaduct factory.

Once complete, this iconic structure will carry trains at up to 200mph. It’s great to see how much progress has been made.”