beleben

die belebende Bedenkung

To £50 billion and beyond

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HS2 will be tunnelled underneath the A38 and the West Coast Main Line instead of soaring over the top on a massive viaduct, the Lichfield Mercury reported.

[“EXCLUSIVE: ‘Major victory’ for Lichfield as HS2 to be tunnelled under A38”, Alex Keller, October 01, 2014]

A viaduct carrying the controversial high-speed track was planned to carry 250mph trains up to 14.4 metres above existing ground level, with overhead power lines stretching 25 metres in the air.

But HS2 engineers have now agreed to tunnel below, a move which will also see the line considerably lowered before and after its underground section.
[…]
HS2 has also agreed to implement changes suggested by the Inland Waterways Association (IWA) and Canal and River Trust (CRT).
[…]
The IWA and CRT jointly commissioned a report to develop an alternative alignment avoiding the canal at Fradley.

The report, by renowned engineering consultancy Hyder Consulting (UK) Ltd, sets out a change which will avoid the canal, reduce embankment heights, noise and visual intrusion, and potentially save the project millions of pounds.

This now seems likely to go through, too.

Tunnelling tends to be much more expensive than viaducts or cuttings. It would be interesting to know what the build estimate of HS2 now is.

Tunnels Route length (km)
in Crossrail 1 21
in HS2 phase 1 (2012) 36
in the Channel Tunnel 50

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Written by beleben

October 1, 2014 at 11:26 am

Posted in High speed rail, HS2

One Response

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  1. Tunnel for Lichfield.
    How did you manage to achieve this fantastic result? – any help and advice you can give my area would be gratefully accepted. Hyder Consulting (UK) Ltd deserve a medal. I live in Berkswell/Balsall Common where HS2 will bisect our two inextricably linked villages. It is proposed to built it on viaducts some 30′ above us. It will carve its way through ancient woodland, SSSI’s, productive agricultural land, the Blythe valley flood plain thus destroying the environment and ecology for generations to come. Our lives and free passage through our area will be disrupted for many years. HS2 do not care and we do not matter.

    Sheila Cooper

    October 1, 2014 at 12:16 pm


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