M23 Junction 11 – Pease Pottage Interchange South: Bridge Deck Refurbishment

The project involves a full refurbishment of the bridge deck at the southern side of the interchange, where it meets the A23 and A264.

Start date 5 June 2026

End date 29 June 2026

Cost TBC

Latest updates

28 May 2026
Weekend closures

To carry out this work safely, the following full weekend closures of the southern side of Pease Pottage Interchange are required:
- Friday 12, Saturday 13, Sunday 14 June (9pm-6am each night)
- 9pm on Friday 19 June to 6am on Monday 22 June
- 9pm on Friday 26 June to 6am on Monday 29 June (contingency weekend)
During these closures, the southern side of the roundabout, used by traffic heading towards Crawley on the A264, will be closed.

Southbound traffic will be diverted by:
- the M23/A23 to the Cuckfield (B2115) exit
- following the signed route to re-join the A23 northbound and using the Pease Pottage exit slip to access the A264 and Brighton Road
Additionally, overnight closures (9pm-6am) will be in place on weeknights throughout the programme.

See more updates

Project information

National Highways is carrying out essential refurbishment works at the Pease Pottage Interchange South, part of Junction 11 on the M23 near Crawley.

The work will begin on 5 June 2026 and is scheduled for completion by 29 June 2026.

Without this work, the structure would continue to deteriorate, posing a risk to the long-term safety and reliability of this busy interchange. .

Both expansion joints have failed and aren't safe. Replacing them needs more work than usual because of the verge layout.

The waterproofing on the bridge deck has worn out. We're renewing it to stop water damaging the structure.

The manhole covers giving access to the bridge supports have also failed. We're cutting a new access point into the support wall so engineers can inspect and maintain them safely.

These repairs will extend the life of the bridge and keep it safe for you to use.

Fixing the joints and waterproofing now prevents bigger, longer disruptions later. The new access point means engineers can carry out routine checks going forward.

We've timed the work for June before the summer holidays and outside the football season to keep disruption as low as possible for drivers and local residents.