M27 Southampton junction 8

We're making improvements to the M27 junction 8 and Windhover roundabout.

Start date Summer 2021

End date TBC

Cost £25 - £50 million

Latest updates

16 April 2021

Highways Act 1980 Orders

We published the Orders for the M27 Southampton Junction 8 scheme under the Highways Act 1980 on 16 April 2021 and submitted both the Side Roads Order and Compulsory Purchase Order to the Secretary of State for Transport for confirmation.

Further details can be found below under the section Highways Act 1980 Orders
23 March 2021

Commencement of Detailed Design

Preliminary design has now been completed and our Supplier has commenced the detailed design.

The Environmental Assessment Report completed as part of the preliminary design is now available in the documents area at the bottom of this page under the heading "Stage 3 Environmental Assessment Reports."
27 August 2020

August 2020

The scheme is progressing towards the completion of the preliminary design.
31 March 2020

Further investigative work

Now that we’ve announced our preferred scheme we’ll carry out further surveys and investigation to allow us to continue to design the scheme in more detail. Once we’ve completed this work we’ll hold some public events so that you can view the final design and ask any questions you may have.
03 March 2020

Preferred route

Following the consultation, we’ve continued to develop the proposed route taking into account issues and alternative suggestions raised during consultation. We’ve also carried out some additional work to establish the solution that provides best value for money. This has led to the scheme being reassessed and we’ve now decided on a joint approach, working with Southampton City Council to deliver the improvements.

We’ll continue to progress the scheme at the M27 junction 8 and Windhover Roundabout, while Southampton City Council will now deliver improvements at junctions along the A3024 corridor.

Find out more about our preferred route.

See more updates

Project information

Research has shown that the M27 junction 8 has unfortunately had a significant number of casualties, particularly between 2009 and 2011.

Poor air quality associated with vehicle emissions is currently an issue within the local area. The local authorities are keen to make improvements to encourage more sustainable modes of transport such as walking, cycling or public transport in an effort to improve air quality and health.

Congestion at Windhover roundabout is currently caused by a combination of localised peak time traffic (7am to 10am and 4pm to 7pm) and rat-running to avoid M27 junction 8 tailbacks.

The scheme improvements will help alleviate traffic congestion which will benefit the community in terms of better air quality for local residents and support the economy by providing improved journey times for local businesses using the route. The improvements will lead to a reduction in the number of casualties.

The aims of this scheme are to:

support economic growth – contributing to sustainable economic growth by supporting employment and local residential development opportunities
improve connectivity and reduce journey times around M27 junction 8 and Windhover Roundabout
provide a safe and serviceable network – improving the safety record at M27 junction 8 and Windhover Roundabout (60 year look ahead assessment period)
provide a more free-flowing and reliable network – reducing congestion around the M27 junction 8 and Windhover Roundabout and improve journey time reliability and connectivity between east and west of the M27 junction 8 – Windhover Roundabout
provide a safe, accessible and integrated network – delivering capacity enhancements to the M27 junction 8 and Windhover Roundabout, while supporting the safe, accessible use of active travel modes for pedestrians and cyclists
provide an improved environment – seeking to prevent the worsening of air quality by reducing congestion and journey times along the M27 junction 8 and Windhover Roundabout and aiming to mitigate noise impact

We made the Orders for the M27 Southampton Junction 8 Improvement Scheme under the Highways Act 1980 on 30 March 2021 and submitted both the Side Roads Order and Compulsory Purchase Order to the Secretary of State for Transport for confirmation.

You can view and read them electronically by following these links:

Copy of Sealed Compulsory Purchase Order and Plan - part 1

Copy of Sealed Compulsory Purchase Order and Plan - part 2

Copy of Sealed Side Roads Order and Plan

General Arrangement-Engineering Drawing

Notice of making the Compulsory Purchase Order

Notice of making the Side Roads Order

Statement of Reasons

Environmental Masterplan Sheet 1

Environmental Masterplan Sheet 2

Environmental Masterplan (Amended to suit Flood Compensation Areas)

Environmental Impact Assessment - Notice of Determination

Environmental Assessment Report - see 'Stage 3 Environmental Assessment Reports' under Documents below

Preferred Route Announcement brochure

Report on Public Consultation

Between 16 April and 29 May 2021 paper copies of these documents will also be available to view at the following locations:

The offices of Highways England Company Limited, Bridge House, 1 Walnut Tree Close, Guildford,GU1 4LZ
Hedge End Library, 11 Upper Northam Road, Hedge End, Southampton SO30 4DY (Monday, Wednesday and Thursday 10:00 a.m. to 5:00 p.m. and Saturday 10:00 a.m. to 1:00 p.m.); and

Paper copies are not yet available to view at Thornhill Community Library in Southampton but we will update this web page as soon as copies can be viewed there.

The Orders are open to objection or representation until 29 May 2021. Any objection to the Order(s) must be made in writing to the Secretary of State for Transport, at the National Transport Casework Team, Tyneside House, Skinnerburn Road, Newcastle Business Park, Newcastle upon Tyne, NE4 7AR or by email to nationalcasework@dft.gov.uk before 29 May 2021 and should state the title of the Order, the grounds of objection and the objector’s address and interests in the land. In the preparation of an objection and the statement of the grounds of objection, it should be borne in mind that the substance of any objection or representation may be communicated to other people who may be affected by it. Further details are available in the notices that can be accessed using the links above.

If you have difficulty accessing any of the documents please contact us and we will try to supply you directly with an electronic copy.

Secretary of State Decision

The Secretary of State will then consider the Scheme and any objections or representations received. This may be followed by a public inquiry or other procedure, before the Secretary of State makes a decision on whether the Orders can be confirmed.