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Saturday April 4th 2020

Smart Motorway works on M23 – Junction 9

Gatwick Spur Smart Motorway Project

Night time closure on:-

13 May 10pm to 4am – On this date, there will be installed a super span gantry at Junction 8 of the M23 adjacent to the M25. There will be  closures at this location on all carriageways on the M23 north and southbound and the entry and exit slips from the M25. The diversion route will be via junction 6 M25, A22, A264 and rejoin at Junction 10 M23

14 and 15 May 10pm to 4am – A full closure in place from junction 8 to 10 southbound. Diversion route via M25 Junction 6, A22, A264, rejoin at junction 10 M23.

16 May 9pm to 4am – Full closure from junction 10 to junction 8 northbound plus the Gatwick Spur entry slip will be closed to undertake work. Diversion route via junction 10 of the M23, A264, A22, rejoin at junction 6 M25. Diversion for Gatwick, Junction 10 M23, A2011, A23, Airport Way and into Gatwick Airport.

Our Main works – 36-hour Weekend Closure – 17 May to 19 May

Friday 17 May from 10pm until midday on Sunday 19 May. All work is weather dependent and subject to change.

What areas along the M23 will they be working in?

Junction 9, Gatwick Spur and roundabout. The southbound exit slip and northbound exit slip will be closed for traffic. There will be NO access into Gatwick Airport from junction 9. The M23 main carriageway in both directions will be open for traffic. There will be a fully signed diversion route in place.
What are the diversion routes?

We are using the diversion routes approved by Sussex & Surrey Police Force and Local Authorities.

  • From Junction 10 of the M23 to Gatwick Airport– via the A2011, A23, Airport Way leading to the North and South Terminals
  • To the M25 – via Junction 10 of the M23, A264,
  • A22 follow signs to Godstone and join M25 at Junction 6.

Additional signage will be in place and advance warning signs will be in situ 2 weeks before work starts. If you have any questions about this project, please contact the project team at or or, alternatively you can write to Highways England at
Highways England 5 St Philips Place
Colmore Row
B3 2PW
You can also find further information about the smart motorway project on our website at where you can sign up for updates and Traffic England throughout the project.