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Projects of the decade: Arup

Arup’s High Speed 1 will create a 108km system to provide 300mph rail travel.

High Speed 1 (formerly the Channel Tunnel Rail Link)

Arup’s Role

Arup created the CTRL alignment, set up London and Continental Railways Ltd, then designed, project managed and delivered the 108km high speed rail link with its partners.

Other parties

Rail Link Engineering (A joint venture between Arup, Bechtel, Halcrow, Systra)

Start/ Finish




Brief description

High Speed 1 connects the Channel Tunnel portal at Folkestone with London St Pancras International with intermediate stations at Ashford, Ebbsfleet and Stratford.


Built on the ‘Arup alignment’ through Stratford, High Speed 1 has transformed travel. Completed on time and within budget, it has helped to attract over £10bn of regeneration investment.

Interesting facts and statistics

  • No houses were demolished to build the line
  • First new rail line in England for over 100 years
  • Two new viaducts built (one the largest high speed rail viaduct in Europe)
  • Three major tunnels (28km in total)
  • Four new international stations built

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