M3 junction 9 improvements

Major improvements to the M3 junction 9 to allow free movement between the A34 and M3.

Region:  South East
Start date:  2021-22
Cost:  £110 million - £130 million
Status:  PLANNED
Type:  Major Scheme
End date:  TBC
Programme:  

Progress report

We consulted the public on our proposals for improving junction 9 of the M3 in summer 2019. The feedback received during that consultation showed there is widespread support for changes to the junction which will reduce congestion and improve traffic flow.

Read our summary consultation report in the 'Consultation 2019' folder of the 'Media and documents' section below. We aim to go back out to public consultation with a further refined set of proposals later in 2020.

Following feedback from our 2018 consultation, we made improvements on the A34/A33 northbound weaving lengths. In further feedback received in the 2019 summer consultation events, some people told us that they continued to be worried that weaving lengths northward of the new junction along the A34 were not long enough.

We have taken that feedback into account, along with new information from additional traffic modelling, and are now reviewing our original proposals. By doing this we’re making sure our final designs are for an even better performing junction.

What's next?

From mid-June we’ll be doing surveys on the land around junction 9. We need to keep our environmental information up to date and ready for when we apply for consent to build the scheme. That involves resurveying key areas. By doing this we know what protected species are in the area and what we need to do to minimise the impact of our work on them.

Most of our surveys will take place in June and July but we’ll continue to update our environmental information throughout the remainder of the year, which means we’ll need to do several more surveys later in the year. Some of these must take place at specific times, depending on the species we’re looking for.

Timeline

Date Event
January / February 2018 Options consultation
July 2018 Preferred route announcement
July to August 2019 Design consultation
Spring 2020 Report on 2019 consultation due to be published
Autumn 2020 Planned Consultation on revised proposals

Why we need this scheme

Junction 9 of the M3 connects south Hampshire with London, the Midlands and the North. It is also part of a key freight route.

Roughly 6,000 vehicles an hour use it during peak periods and it currently creates a bottleneck that causes significant delays throughout the day.

Traffic is particularly heavy between the M3 and the A34 with frequent queues on the northbound off-slip of the M3 which are a safety risk during peak periods. To reduce the queues there is more green time allocated to the traffic lights on the northbound off-slip of the M3 and the A34 link. This amended sequencing, in turn, causes lengthy queues on A272 Spitfire Link and Easton Lane during the morning and evening peak periods.

Aims

This new proposed layout aims to:

  • improve safety by reducing queuing and delays
  • reduce congestion and improve reliability
  • reduce the number of people affected by noise and improve air quality
  • improve conditions for non-motorised users - it would connect National Cycle Network Route 23 which is severed by the current layout
  • support economic growth - improving road capacity which will help create jobs, improve business and support the building of new homes

Project media files and documents

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Project timeline

Planned roadworks

Roadworks and Events for England

The latest incident information for England's motorway and trunk routes provided by Highways England

Location : The M27 eastbound entry slip at junction J5 . Reason : Roadworks are planned. Status : Pending. Schedule : From 21:00 on 7 August 2020 to 06:00 on 8 August 2020. Schedule : From 21:00 on 9 August 2020 to 06:00 on 10 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 7, 2020, 11:00 pm
Location : The M27 eastbound entry slip at junction J5 . Reason : Roadworks scheme. Status : Currently Active. Period : from 20:07 on 7 August 2020 to 06:00 on 21 September 2020.
Posted: August 7, 2020, 7:07 pm
Location : The M3 westbound between junction J14 and the M27 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 10 August 2020 to 15 August 2020. Schedule : From 21:00 on 21 August 2020 to 06:00 on 22 August 2020. Schedule : From 21:00 on 24 August 2020 to 06:00 on 25 August 2020. Schedule : Expect disruption everyday between 21:00 and 06:00 from 12 September 2020 to 14 September 2020. Lanes Closed : All lanes will be closed.
Posted: August 6, 2020, 5:04 am
Location : The M27 eastbound at junction J4 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 10 August 2020 to 17 August 2020. Schedule : From 21:00 on 21 August 2020 to 06:00 on 22 August 2020. Schedule : From 21:00 on 24 August 2020 to 06:00 on 25 August 2020. Schedule : Expect disruption everyday between 21:00 and 06:00 from 12 September 2020 to 14 September 2020. Lanes Closed : All lanes will be closed.
Posted: August 6, 2020, 5:02 am
Location : The M3 westbound between junction J14 and the M27 . Reason : Roadworks scheme. Status : Currently Active. Period : from 21:00 on 3 August 2020 to 06:00 on 21 September 2020.
Posted: August 4, 2020, 8:52 pm
Location : The M3 westbound entry slip at junction J11 . Reason : Roadworks are planned. Status : Pending. Schedule : From 21:00 on 10 August 2020 to 06:00 on 11 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 3, 2020, 8:12 pm
Location : The M3 westbound between junction J14 and the M27 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 20:00 on 10 August 2020 to 06:00 on 11 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 3, 2020, 7:22 pm
Location : The M3 eastbound entry slip at junction J14 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 20:00 on 10 August 2020 to 06:00 on 11 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 3, 2020, 7:22 pm

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The M5 through the West Country is currently experiencing severe delays southbound.
Posted: August 8, 2020, 1:44 pm

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