What is happening?
National Highways has announced their third full weekend closure of the M25 linked to the works at Wisley Interchange. The closure will be in both directions between junctions 10 at Wisley and 11 at Chertsey. The closure will run from 9pm on Friday 12 July to 6am on Monday 15 July.
The diversion will follow the same route as the first closure in March. Clockwise traffic will come off at junction 10 and up the A3 to Painshill, along the A245 through Byfleet and West Byfleet, before joining the A320 in Woking and following it through Ottershaw to rejoin the motorway at junction 11. The route is reversed for anti-clockwise traffic. Please visit National Highways website for full diversion route information.
Travel advice
The northbound exit from the A3 onto the A245 will be re-opened in full when the M25 closure is in place. The cones and barriers on the A245 will also be removed so it can be used as part of the diversion.
National Highways will close the slip road and the left-hand lane on the A245 again when the M25 is re-opened. This will allow them to carry out utilities and drainage work, which should be completed by November 2024.
We expect that roads around the M25 and diversion route will be busy. Please consider this when making plans, particularly if you are heading to an airport. Please check for traffic updates before travelling.
The closure is scheduled for bridge construction. This work is weather dependent, as cranes are needed to lift the heavy bridge beams. There is a risk that these works could be postponed at short notice if strong winds are forecast for the weekend.
Full details and updates will be available on the National Highways website. Please keep checking this page for the latest information.
M25 and A3 overnight and weekend closures
National Highways is planning further overnight and full weekend closures on either the A3 or M25 over the coming months. Drivers are advised to check the National Highways website for the latest dates when making plans and before travelling.
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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