HS2 unveils designs for first Chiltern tunnel vent shaft house

By Tom Lowe2020-07-23T11:15:00

Grimshaw-designed facility to be built by Sir Robert McAlpine, VolkerFitzpatrick and Bouygues

HS2 has unveiled its designs for the first of four vent shaft head houses for the railway’s 10-mile-long Chiltern tunnel.

The Chalfont St Peter facility in Buckinghamshire will house a 60m shaft providing ventilation and emergency access to the twin bore tunnels below, the longest and deepest tunnels on the route.

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