M3 junctions 9 to 14: smart motorway

Upgrading the M3 between junction 9 (Winchester / A34 interchange) and junction 14 (M27 Southampton interchange) to an all-lane running smart motorway. The scheme was announced in 2015 by the government, and will link to the smart motorway scheme on the M27.

Region:  South East
Start date:  2019/20
Cost:  ¬£139 million
Status:  PLANNED
Type:  Major Scheme
End date:  2021/22
Programme:  Smart Motorways

Progress report

Progress on the M3 junction 9 to 14 smart motorway continues with the detailed design of the scheme underway.

A number of surveys will be taking place over the coming months to inform the design work. These surveys will be looking at a range of aspects including drainage, environmental factors and motorway asset condition.

The first to be undertaken will be a drainage survey between junctions 9 and 14. This work began in December 2018 and will finish in Summer 2019. To minimise the impact on local communities and businesses, the majority of the surveys will take place on weeknights.

What's next?

For work to be progressed safely and quickly, it will be necessary to implement some temporary traffic restrictions. These temporary traffic restrictions will involve lane closures and limited slip-road closures. Where a slip-road is closed, a diversion will be put in place.

Please note that we will complete this work overnight. The motorway will be kept open throughout the day during the periods of the traffic works.

Please sign up to our email alerts to keep updated about the scheme and planned public events, and to learn more about the smart motorways programme.

Why we need this scheme

The M3 is located in Hampshire, and falls within our Area 3 Asset Support Contract, as well as the South East Regional Control Centre. It's a key part of the strategic road network, providing a vital transport link to London, south Hampshire via the M27 Southampton interchange, and the Midlands via the A34.

The M3 junctions 9 to 14 is a crucial route connection for the Solent to Midlands, and Solent to M25 routes. The A34 is linked to the M27 by the M3 junction 14 at Eastleigh to junction 9 at Winchester. The route serves the ports of Southampton and Portsmouth, Southampton Airport, and the wider Solent region.

This route is heavily used by cars and freight, and faces congestion during peak travel hours caused by the volume of traffic using the network.

Aims

The aims of this scheme are to:

  • reduce congestion and smooth the flow of traffic by turning the hard shoulder into a permanent running lane
  • improve journey time reliability on the strategic road network
  • support the economy and facilitate economic growth by providing increased capacity on the motorway
  • continue to deliver a high level of safety performance on the network using smart motorway techniques
  • minimise environmental impacts of the scheme and where possible allow for enhancements to be made to the environment

The scheme in detail

The M3 smart motorway stretches from junction 9 (Winchester / A34 interchange) to junction 14 (M27 Southampton interchange). The scheme is 13km (8 miles) long.

The scheme includes:

  • junction 9 to 13 upgraded to a smart motorway with all-lane running
  • junction 13 to 14 to a controlled motorway
  • junction 14 to M27 link road to a controlled motorway

The scheme will involve:

  • new CCTV cameras and electronic information signs and signals on gantries - these will show variable mandatory speed limits and manage traffic flow and incidents
  • emergency areas throughout the length of the scheme
  • a safe area located on junction 11 and 12 slip roads
  • the hardening of the central reserve and installation of a reinforced barrier to improve safety

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 A303 westbound between the junctions with the M3 and the A34 . Lane Closures : Lane two will be closed. Reason : Emergency barrier repairs are planned. Status : Pending. Schedule : From 21:00 on 22 January 2019 to 06:00 on 23 January 2019. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2019, 8:50 pm
Location : The A303 eastbound between the junctions with the A34 and the M3 . Lane Closures : Lane two will be closed. Reason : Emergency barrier repairs are planned. Status : Pending. Schedule : From 21:00 on 22 January 2019 to 06:00 on 23 January 2019. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2019, 8:50 pm
Location : The A303 eastbound between the A3093 and the junction with the A34 . Lane Closures : Lane one is closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 23 January 2019. Lanes Closed : There is one of two lanes closed.
Posted: January 22, 2019, 8:06 pm
Location : The M3 westbound between junctions J11 and J12 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 23 January 2019. Lanes Closed : There is one of three lanes closed.
Posted: January 22, 2019, 8:06 pm
Location : The M27 eastbound between junctions J5 and J7 . Lane Closures : The hard shoulder is closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 19 February 2019.
Posted: January 22, 2019, 6:47 pm
Location : The M27 eastbound between junctions J5 and J9 . Reason : Roadworks scheme. Status : Currently Active. Period : from 11:20 on 18 January 2019 to 06:00 on 19 February 2019.
Posted: January 22, 2019, 6:47 pm
Location : The M27 eastbound between junctions J5 and J9 . Reason : Roadworks scheme. Status : Currently Active. Period : from 20:01 on 21 January 2019 to 06:00 on 19 February 2019.
Posted: January 22, 2019, 6:47 pm
Location : The M3 westbound between junctions J11 and J13 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 January 2019 to 26 January 2019. Schedule : Expect disruption everyday between 20:00 and 06:00 from 28 January 2019 to 30 January 2019. Lanes Closed : There will be one of three lanes closed.
Posted: January 22, 2019, 2:10 pm
Location : The M3 westbound entry slip at junction J12 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 23 January 2019 to 26 January 2019. Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2019 to 30 January 2019. Lanes Closed : All lanes will be closed.
Posted: January 22, 2019, 2:10 pm
Location : The M3 westbound exit slip at junction J12 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 23 January 2019 to 26 January 2019. Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2019 to 30 January 2019. Lanes Closed : All lanes will be closed.
Posted: January 22, 2019, 2:10 pm
Location : The M3 westbound between junctions J11 and J13 . Reason : Roadworks scheme is planned. Status : Pending. Schedule : From 20:00 on 23 January 2019 to 06:00 on 30 January 2019.
Posted: January 22, 2019, 2:10 pm
Location : The M3 westbound exit slip at junction J13 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 24 January 2019 to 26 January 2019. Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2019 to 30 January 2019. Lanes Closed : All lanes will be closed.
Posted: January 22, 2019, 2:10 pm
Location : The M27 eastbound between junctions J3 and J4 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 25 January 2019 to 27 January 2019. Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 February 2019 to 18 February 2019.
Posted: January 21, 2019, 6:32 am
Location : The A303 eastbound exit slip to the A34 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 21:00 and 06:00 from 22 January 2019 to 24 January 2019. Lanes Closed : All lanes will be closed.
Posted: January 21, 2019, 6:32 am
Location : The M27 eastbound between junctions J2 and J4 . Reason : Roadworks scheme is planned. Status : Pending. Schedule : From 20:00 on 25 January 2019 to 06:00 on 18 February 2019.
Posted: January 21, 2019, 6:32 am
Location : The M27 eastbound between junctions J2 and J3 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 25 January 2019 to 27 January 2019. Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 February 2019 to 18 February 2019.
Posted: January 21, 2019, 6:32 am

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