M23 junctions 8 to 10: smart motorwayRecently updated

Upgrading the 11 mile (18km) stretch of the M23 near Gatwick Airport, between junction 8 near Merstham and junction 10 at Copthorne, to an all-lane running smart motorway.

Region:  South East
Start date:  March 2018
Cost:  ¬£158.4 million
Status:  PLANNED
Type:  Major Scheme
End date:  January 2020
Programme:  Smart Motorways

Progress report

We are consulting on the implementation of variable mandatory speed limits (VMSL) on M23 junction 8 to 10, and a permanent 50mph speed limit on the westbound carriageway of Gatwick Spur from M23 junction 9 to 9a.

We are keen to have your comments on how the proposals could affect you, your organisation or those you represent. Please visit our consultation page for more information and to have your say.

The consultation will start on Monday 11 December 2017 and will close on Monday 15 January 2018. Please ensure your responses arrive no later than that date.

What next?

All responses received within the consultation period will be taken into consideration and a summary report will be made available. The summary report will provide an analysis of responses from the consultation and our response.

Why we need this scheme

The M23 is a crucial part of the UK strategic road network connecting Crawley and Gatwick Airport to the M25 motorway, routes into London and the rest of the UK. This stretch of the M23 is heavily used by traffic travelling to and from Gatwick Airport and between Brighton and London, especially during UK holiday periods. As a result safety, congestion and journey times are all key issues that need to be improved. As junction 9 of the M23 is the main access for traffic travelling to and from Gatwick Airport, this scheme is of particular local and national economic and political importance.

Aims

With this scheme, we aim to improve:
  • safety
  • congestion
  • journey times
Learn more about how to drive on smart motorways.

The scheme in detail

The M23 junction 8 to 10 smart motorway scheme will add further road space by converting the hard shoulder to a permanent running lane with additional traffic monitoring, emergency refuge areas and variable message signs. The work will include:
  • four permanent running lanes in each direction, created by conversion of the hard shoulder
  • redefined junction layouts to accommodate the extra lane
  • 16 new gantries to carry the new variable message signs
  • 12 new emergency refuge areas
  • a hardened central reserve with a new rigid concrete barrier
  • new noise barriers where identified by environmental assessment
  • work to maintain access to the motorway from Weatherhill Depot and for traffic officers

Construction

During the construction phase of the scheme, roadworks will be needed along this section of the M23 between junctions 8 and 10. It is anticipated that narrow lanes traffic management, temporary concrete safety barriers and speed restrictions will be put in place. In addition junction layouts may be temporarily altered to allow for resurfacing and improvement. There will be temporary closures of the carriageways at night on some occasions. In these instances all updates and diversions will be clearly available and published in the appropriate section of the scheme’s webpage. Clearly signed diversions will be put in place where the work is being carried out.

Environmental impact

Highways England is committed to delivering better environmental outcomes. In remaining within current motorway boundaries, smart motorways have the built-in advantage of minimising scheme environmental footprints. In addition, we carry out thorough environmental assessments to identify and assess potential environmental impacts and recommend mitigation that can be included in the scheme to minimise them.

M23 junction 8 to 10 environmental assessment

We have considered the full range of environmental topics and found that there will be no long term significant effects. Temporary effects during construction will be slight changes in views, construction noise, disruption to road users and some loss of habitat of negligible value. A comprehensive Construction Environment Management Plan will minimise these effects. The key issues considered are:
  • air quality, noise and visual impacts in relation to nearby housing
  • the SSSI between Mole Gate and Reigate Escarpment
  • protected species and habitats including bats, badgers and great crested newts
  • the setting of conservation areas and heritage assets such as Surrey Hills Area of Outstanding Natural Beauty
  • public rights of Way

Project media files and documents

There are no images for this project

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 M25 clockwise between junctions J8 and J9 . Lane Closures : Lanes 1, 2, 3 and 4 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 27 January 2018 to 15 February 2018. Lanes Closed : All lanes will be closed.
Posted: January 23, 2018, 1:10 pm
Location : The M25 clockwise between junctions J8 and J9 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:30 from 23 January 2018 to 26 January 2018. Schedule : From 23:00 on 26 January 2018 to 06:00 on 27 January 2018. Lanes Closed : There will be three of four lanes closed.
Posted: January 23, 2018, 5:31 am
Location : The M25 anticlockwise exit slip at junction J8 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:30 from 29 January 2018 to 2 February 2018. Schedule : From 23:00 on 2 February 2018 to 06:00 on 3 February 2018. Schedule : Expect disruption everyday between 22:00 and 05:30 from 5 February 2018 to 9 February 2018. Schedule : From 23:00 on 9 February 2018 to 06:00 on 10 February 2018. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2018, 10:11 pm
Location : The M25 anticlockwise between junctions J9 and J8 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:30 from 29 January 2018 to 2 February 2018. Schedule : From 23:00 on 2 February 2018 to 05:30 on 3 February 2018. Schedule : Expect disruption everyday between 22:00 and 05:30 from 3 February 2018 to 9 February 2018. Schedule : From 23:00 on 9 February 2018 to 05:30 on 10 February 2018. Lanes Closed : There will be one of four lanes closed.
Posted: January 22, 2018, 10:11 pm
Location : The M23 southbound exit slip at junction J9 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 06:00 from 29 January 2018 to 1 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 5 February 2018 to 8 February 2018. Schedule : From 22:00 on 8 February 2018 to 04:00 on 9 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 19 February 2018 to 22 February 2018. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2018, 10:10 pm
Location : The M23 northbound exit slip at junction J9 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 06:00 from 29 January 2018 to 1 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 5 February 2018 to 8 February 2018. Schedule : From 22:00 on 8 February 2018 to 04:00 on 9 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 19 February 2018 to 22 February 2018. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2018, 10:10 pm
Location : The M23 SPUR eastbound between junctions J9A and J9 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 06:00 from 29 January 2018 to 1 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 5 February 2018 to 8 February 2018. Schedule : From 22:00 on 8 February 2018 to 04:00 on 9 February 2018. Schedule : Expect disruption everyday between 22:00 and 06:00 from 19 February 2018 to 22 February 2018. Lanes Closed : There will be one of two lanes closed.
Posted: January 22, 2018, 10:10 pm
Location : The M23 northbound between junctions J10 and J9 . Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 29 January 2018 to 31 January 2018. Lanes Closed : There will be one of three lanes closed.
Posted: January 22, 2018, 8:11 pm
Location : The M23 southbound between junctions J9 and J10 . Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 29 January 2018 to 31 January 2018. Lanes Closed : There will be one of three lanes closed.
Posted: January 22, 2018, 8:11 pm
Location : The M25 anticlockwise between junctions J9 and J8 . Reason : Emergency barrier repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 09:30 and 16:00 from 29 January 2018 to 30 January 2018.
Posted: January 22, 2018, 9:40 am
Location : The M23 northbound entry slip at junction J8 from the M25 clockwise. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : All lanes will be closed.
Posted: January 22, 2018, 8:00 am
Location : The M23 northbound entry slip at junction J10 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 22:00 on 26 January 2018 to 04:00 on 29 January 2018. Schedule : From 22:00 on 2 February 2018 to 04:00 on 5 February 2018. Lanes Closed : All lanes will be closed.
Posted: January 22, 2018, 4:00 am
Location : The M23 northbound between junctions J10A and J10 . Lane Closures : Lanes 2 and 3 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 21:00 on 26 January 2018 to 22:00 on 26 January 2018. Schedule : From 21:00 on 2 February 2018 to 22:00 on 2 February 2018. Lanes Closed : There will be two of three lanes closed.
Posted: January 19, 2018, 10:02 pm
Location : The M25 clockwise entry slip at junction J6 . Lane Closures : Lane one will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : There will be one of two lanes closed.
Posted: January 19, 2018, 3:10 pm
Location : The M25 clockwise between junctions J5 and J6 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : There will be three of four lanes closed.
Posted: January 19, 2018, 3:02 pm
Location : The M25 clockwise between junctions J6 and J7 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : There will be three of four lanes closed.
Posted: January 19, 2018, 3:02 pm
Location : The M25 clockwise at junction J7 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : All lanes will be closed.
Posted: January 19, 2018, 3:02 pm
Location : The M25 clockwise at junction J6 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : All lanes will be closed.
Posted: January 19, 2018, 3:02 pm
Location : The M23 northbound between junctions J10 and J9 . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 22:00 on 26 January 2018 to 04:00 on 29 January 2018. Schedule : From 22:00 on 2 February 2018 to 04:00 on 5 February 2018. Lanes Closed : All lanes will be closed.
Posted: January 19, 2018, 2:53 pm
Location : The M23 southbound entry slip at junction J8 from the M25 clockwise. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 January 2018 to 26 January 2018. Lanes Closed : All lanes will be closed.
Posted: January 19, 2018, 2:40 pm
Location : The M23 southbound between junctions J10A and J11 . 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 2018 to 26 January 2018. Lanes Closed : There will be one of three lanes closed.
Posted: January 19, 2018, 12:31 pm
Location : The M23 northbound between junctions J10 and J9 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 22:00 on 25 January 2018 to 06:00 on 26 January 2018. Schedule : From 22:00 on 1 February 2018 to 06:00 on 2 February 2018. Lanes Closed : There will be two of three lanes closed.
Posted: January 19, 2018, 6:07 am
Location : The M23 northbound between junctions J10 and J9 . Reason : Roadworks scheme. Status : Currently Active. Period : from 22:00 on 11 January 2018 to 04:00 on 5 February 2018.
Posted: January 16, 2018, 6:14 pm

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