M25 closure dates: National Highways confirm June date with Cobham Services closed and new diversion route

-Credit: (Image: SurreyLive)
-Credit: (Image: SurreyLive)


Details of an overnight M25 weekend closure at Wisley where the A3 meets the motorway have been announced by National Highways.

The M25 will be closed westbound between Junction 9 at Leatherhead and Junction 10 at Wisley and the A3. The eastbound carriageway will also be shut at Junction 10 itself. The closure will be in place from 9pm on Saturday, June 8 until 9am on Sunday, June 9. The closure will also include Cobham Services.

The M25 was shut in May for the installation of a similar bridge in what was the second of five full weekend closures planned throughout 2024 .

This latest closure will see drivers in Surrey directed to follow a diversion route as a section of the road is shut to allow for a bridge deck to be installed as part of the £317million Junction 10 improvement scheme.

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The closure is for the installation of a bridge deck over the eastbound gyratory. National Highways confirmed: “Between 9pm on Saturday, June 8 and 9am Sunday, June 9 there will be a full closure of the westbound carriageway of the M25 between Junctions 9 and 10 that will also include Cobham Services.”

It continued: “The eastbound carriageway will also be closed on the M25 at J10 during this time with a diversion via the exit slip road, roundabout, and entry slip road, where road users will be able to rejoin the M25.”

It appears the eastbound closure at the junction will mean drivers travelling from the direction of Heathrow towards Gatwick will be able to stay on the motorway with the exception of at J10 where they will divert around the roundabout. An official diversion route for westbound drivers travelling in the direction of Heathrow from Gatwick has not yet been made available.

National Highways further outlined: “Our diversion routes are designed to suit all vehicle types. We advise you not to use a satnav when following any of our diversions because there is a risk it could divert you down an unsuitable road or back onto the network when it is closed.”

West Horsley Parish Council shared the road agency’s warning and added that the A3 northbound off slip at Painshill will remain shut for the next few weeks to ease congestion around works on the A245. It said this is to improve the eastbound traffic flow along the A245.

Changes have also been made to the sequencing of traffic lights on all sides of the Painshill roundabout to favour the flow eastbound on the A245. National Highways was contacted for further details about a diversion route for westbound drivers.

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