M23 Junctions 8 to 10 Smart Motorway

I am writing to let you know in March 2018 we will start work on the M23 between Junctions 8 and 10, connecting Crawley and Gatwick Airport , to convert this section into a smart motorway, this includes converting the hard shoulder into a permanently running lane and introducing variable mandatory speed limits along this section of the motorway to help improve traffic flow. Smart motorways are part of the Government's investment in motorways and major A-roads, which will see up to £3 billion a year invested into delivering a safe and serviceable network by 2021.


The smart motorway is being designed to smooth traffic flow, increase capacity and make journey times more reliable by using variable speed limits, new signals and signing. The work will involve the use of technology and the conversion of the hard shoulder into a permanent live lane, known as an All-Lane Running smart motorway.


The programme is scheduled to start in March 2018 and will be completed by January 2020. You can track progress on our scheme website. The work will be carried out by Carillion Kier Joint Venture (CKJV) on our behalf.


The M23 will be affected at various times during the construction phase of the project. During the construction phase, narrow lanes will be required to create a safe working space. Lane and full carriageway closures will also be required during the construction of the project. Full diversion routes will be clearly signed during these closures. Specific details will be sent to you and made available to the public, before construction starts. Details will also be available on the website.


We are currently organising Public Information Exhibitions (PIEs),where you will be able to learn more about Smart Motorways, our plans for the M23 in particular, and meet members of the project teams.

Details of the forthcoming Public Information Exhibitions which will be held at Gatwick Airport and Nutfield, are as follows:





14:00 - 22:00

South Terminal - Arrivals level 2

Gatwick Airport

Destinations Place




09:00 - 18:00


14:00 - 22:00

Nutfield Lodge

Nutfield Road





The above Public Information Exhibitions will be open to the public where you can learn more about Smart Motorways and speak with staff working on the programme.

For further information, please visit http://roads.highways.gov.uk/projects/m23-junctions-8-to-10-smart-motorway

Contact us

If you have any questions about our proposed work, please contact us on 0300 123 5000 or email us at: M23.J8-10Smart@highwaysengland.co.uk

Thank you in advance for your patience during our work.



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