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M25 Closures

Photo credit: @HighwaysSEAST on X

What happened?

Back in May, National Highways completed their second weekend closure of the M25, between junctions 9 at Leatherhead and 10 at Wisley. The closure ran from 9pm on Friday 10 May and was due to reopen at 6am on Monday 13 May. The road reopened at 11pm on Sunday, seven hours ahead of schedule.

Over the weekend a new bridge was installed consisting of 68 beams, each weighing 16 tonnes. Another four beams weighing 40 tonnes and a new gantry spanning the entire carriageway width was also installed.

Photo credit: @HighwaysSEAST on X

Impact on Surrey roads

National Highways monitored traffic in the local area during the closure. Reports show that the roads around the M25 and the diversion route were much busier than the first closure in March.

This could be due to the different closure location and diversion route, between junctions 9 and 10. Compared to the previous closure, which was between junctions 10 and 11.

National Highways have said that this was partly due to drivers bypassing the official diversion at junction 8 on the M25. Instead, drivers traveled to the road closure at junction 9. This meant there was a greater impact on that route and the surrounding roads. We are raising this with National Highways before further closures, to see how they can miminise these impacts for future closures.

We recognise that the Wisley interchange works have an unfair impact on residents who need to use the surrounding roads on a regular basis. We will continue to listen to your views and provide the feedback to National Highways to ensure disruption is minimised wherever possible.

What happens next?

National Highways will be closing the M25 around this junction a further three times this year. Closures are needed to demolish three bridges and install three new ones, including the UK's first heathland bridge.

There will also be regular overnight closures on either the A3 or M25 over the coming months. Drivers are advised to keep checking the National Highways M25 Junction 10 project website for the latest dates when making plans and before travelling.

Photo credit: @HighwaysSEAST on

Who can I contact about the works?

If you have questions about the project, you can contact National Highways by emailing info@nationalhighways.co.uk or calling 0300 123 5000.

You can also sign up to our Highways Update newsletter to get the latest updates on the closures and other highways issues from across the county. Don't forget to follow the Surrey Highways Facebook and X accounts.

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