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HS2 has updated designs for the Amersham Headhouse – one of five structures that will be built to provide ventilation and emergency access to the high-speed rail line’s 10 mile-long Chiltern tunnel.

The Chalfont St Giles Headhouse is the second of four structures that will be built to provide ventilation and emergency access to the high-speed rail line’s 16Km (10 miles) long Chiltern tunnel.

Find information about planned HS2 works, activities and events taking place in the Northamptonshire area.

Streethay Overbridge is one of three bridges that will enable HS2 to pass beneath the A38 Rykneld Street, A38 Southbound Slip Road, and the South Staffordshire Line (SSL).

The Adelaide Road Headhouse is located between Chalk Farm Road and Primrose Hill Road on the Network Rail embankment area.

Align is working on behalf of HS2 Ltd to build 22km (13.5 miles) of the high speed rail line, running between the Colne Valley and the Chilterns.

Euston Portal Headhouse and Ventilation Shaft sit on top of the concrete box, where the tunnels connect to the box south of Mornington Street bridge.

We are building a new 3.4km viaduct crossing the Colne Valley

The site will once again be at the heart of the rail network within the new Birmingham Curzon Street Station complex.