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Our bridge building machine lifting a segment for the Colne Valley Viaduct.
Our bridge building machine lifting a segment for the Colne Valley Viaduct.

HS2 in Buckinghamshire and Oxfordshire

The HS2 route in Buckinghamshire and Oxfordshire will travel through The Chalfonts, Central Chilterns, to the south-west of Aylesbury and across north-east Oxfordshire.

Within Buckinghamshire, the route includes the Chiltern Tunnel with a North Portal (tunnel entrances/exits) and five shafts along its length, four of these are ventilation shafts at Chalfont St Peter, Chalfont St Giles, Amersham and Little Missenden, with the fifth shaft being an intervention one at Chesham Road.

There will be four main viaducts at the Colne Valley, Wendover Dean, Small Dean and Thame Valley, that will carry HS2 trains. There will also be an infrastructure and maintenance depot at Calvert.

View or download our HS2 in Buckinghamshire route and key structures map.

Find out more about our works in the area

Funding in Buckinghamshire

£40m Community and Environment Fund (CEF and BLEF)

The Fund is administered by Groundwork UK on behalf of HS2 Ltd. One funding programme (with dual aims) to offset the disruption of Phase One of HS2 on local communities.

£15m allocated to the HS2 central region (Staffordshire, Warwickshire, Buckinghamshire, Northamptonshire, Oxfordshire and Hertfordshire). Of which – £7.39m has been allocated to 142 projects in the central region to date (including £3.6m to 66 projects in Buckinghamshire). Projects supported through CEF & BLEF can be found on the interactive map.

£30m Road Safety Fund (RSF)

To mitigate the effects of construction traffic along the line of route (where funding is not already provided out of the overall HS2 budget) with a focus on leaving a legacy of enhanced road safety.

£3.95m allocated to Buckinghamshire Council. £310k (8%) drawdown for projects to date, to fund programme development and, to date, one scheme.

Buckinghamshire Council have developed a RSF specific webpage to find out more about the funds and how to apply.

£5m Woodland Fund

Funding to support native woodland creation and the restoration of Plantations on Ancient Woodland Sites (PAWS) within a 25-mile zone surrounding the HS2 Phase One route.

The fund is administered by the Forestry Commission on behalf of HS2 Ltd.

£1.45m approved to 34 projects to date. 17 projects funded in Buckinghamshire to date with a total investment of £190,765.

Our Green Corridor online mapping tool shows how we are minimising and compensating for the environmental impact of HS2 (points and areas shown on the map in light blue), as well as the progress of environmental and community projects (points and areas shown on the map in purple).

Traffic Information Guides

These traffic guides provide you with details of how construction traffic is going to be managed in your area.  Please take a look at the routes that we plan to use in the areas we are operating in. You can gain an overview of the control measures that are in place across the whole HS2 route, as well as specific local actions, such as junction improvements and crossings.

Main Works Contractors in Buckinghamshire

Align is the main works contractor constructing both the three kilometre long Colne Valley Viaduct and the Chiltern Tunnel. EKFB is the main works contractor building the HS2 railway line from the North Portal at South Heath through to Southam in Warwickshire.

HS2 and the role of the Highways Authority in highway matters

The HS2 Act of Parliament provides HS2 Ltd and their contractors with the powers to work in the highway to construct the new railway. The responsibilities that councils have for HS2 works differ slightly from other highways work. In all cases, the local Highway Authority is consulted and in certain cases, the consent of the highway authority is required.

HS2 Ltd and their contractors produce Local Traffic Management Plans and work very closely with the councils and their highways teams to ensure that traffic is well managed.  HS2 Ltd is only required to seek consent on traffic routes for vehicles over 7.5 tonnes. Further information can be found in the HS2 Act or contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]

Lorry movements in Buckinghamshire

The below guide provides details on the number of Heavy Goods Vehicles (HGVs) using the road network in Buckinghamshire. In parts of Buckinghamshire two of our main works contractors – Align and EKFB – share the same traffic routes, so the guide below provides an overview of the combined traffic numbers for both contractors.

Traffic information guides

Please follow the links below to find out how construction traffic is going to be managed in your area.

What we're delivering in South Buckinghamshire

Colne Valley Viaduct

Colne Valley Viaduct

Stretching for more than 3.4km (2 miles) across a series of lakes and waterways between Hillingdon and the M25.

Chilterns South Portal Chalk Grassland Project

Chilterns South Portal Chalk Grassland Project

A new chalk grassland project in the Chiltern Hills is being constructed as part of our Green Corridor Programme.

Chiltern Tunnel

Chiltern Tunnel

The Chiltern Tunnel is 16km (10 miles) long and will carry passengers under the Chiltern Hills.

Chalfont St Peter Headhouse

Chalfont St Peter Headhouse

The Chalfont St Peter Headhouse will provide ventilation and emergency access to the (10 miles) Chiltern tunnel.

Chalfont St Giles Headhouse

Chalfont St Giles Headhouse

The Chalfont St Giles Headhouse will provide ventilation and emergency access to the 16km (10 miles) Chiltern tunnel.

Amersham Headhouse

Amersham Headhouse

The Amersham Headhouse is set just outside the town, and will regulate the air quality of the Chiltern Tunnel.

Little Missenden Headhouse

Little Missenden Headhouse

The Little Missenden Headhouse will provide ventilation and emergency access to the high-speed rail line’s 16km (10 miles) Chiltern tunnel.

Chesham Road Intervention Shaft

Chesham Road Intervention Shaft

The intervention shaft will provide access for emergency services. It will be located off the B485 at Hyde End, near Gt Missenden.

Chiltern Tunnel North Portal ancillary building

Chiltern Tunnel North Portal ancillary building

The North Portal of the Chiltern tunnel has been designed to provide air pressure and noise relief.

What we're delivering in the North Chilterns to Aylesbury area

Wendover Dean Viaduct

Wendover Dean Viaduct

Located south of the village of Wendover in Buckinghamshire.

Small Dean Viaduct

Small Dean Viaduct

The striking 345m long Small Dean Viaduct, just south of Wendover.

Thame Valley Viaduct

Thame Valley Viaduct

The Thame Valley Viaduct is located within the Northern Vale and crosses the low-lying Thame Valley.

Turweston Green Bridge

Turweston Green Bridge

The 99m wide green bridge is the largest on the HS2 project and will cross the railway near the village of Turweston.

Rural footbridges

Rural footbridges

We’re building bridges that will carry rural footpaths and bridleways across the new high speed railway.

What we're delivering in the Calvert area

Calvert Infrastructure Maintenance Depot

Calvert Infrastructure Maintenance Depot

The Calvert depot will ensure that HS2 runs safely and efficiently.

Sheephouse Wood Bat Protection Structure

Sheephouse Wood Bat Protection Structure

The Sheephouse Wood Bat Protection Structure will run for around 1km alongside Sheephouse Wood in Buckinghamshire.

Explore the In Your Area Map

Archaeology

Archaeology

The map displays information about our archaeological sites along the route.

Green Corridor

Green Corridor

The map displays information about our environmental sites along the route.

HS2 funded projects

HS2 funded projects

The map displays information about our funded community and business projects along the route.

HS2 in Buckinghamshire and Oxfordshire community construction progress updates

North Chilterns area

Aylesbury area

Calvert area

Turweston to Greatworth

Keeping you informed about our works

Stay informed by the works

Stay informed by the works

Find information about HS2 works and activities taking place in your area.

Managing impacts of construction

Managing impacts of construction

Find out information about how we manage construction impacts.

Construction look ahead and newsletters

Construction look ahead and newsletters

Read our three-month look ahead and newsletters for associated work in Buckinghamshire and Oxfordshire.

Recent work in your area

Name
Location
Estimated Start Date
Estimated End Date
A418
06/04/2024
11/04/2024
Great Missenden, Leather Lane
06/04/2024
07/04/2024

Further information

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