Work to ease congestion and improve safety at the busiest junction of the M25 continues, with a series of closures over the coming weeks.
The scheme to upgrade Junction 10 in Surrey is already improving driver journeys, with jet lanes now carrying traffic through the junction while avoiding traffic signals.
National Highways has also opened the new Wisley Lane and installed several structures which will offer safe passage for pedestrians, cyclists and horse-riders over the motorway.
This includes the UK’s first heathland bridge, the beams for which were installed at the junction last month.
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To allow work on the next phases of the project to be completed safely, the motorway will shut for two full weekends next month, as it did on three occasions last year.
The weekend closures, which will see old bridges demolished and removed, are due to take place from:
- 9pm Friday, March 7 - 6am on Monday, March 10 - 9pm Friday, March 21 – 6am on Monday, March 24
Other significant works in the coming weeks and months will see the slip roads from Junction 10 closed between February 21-24.
The A3 will be closed in both directions between Junction 10 and Cobham Roundabout/A245 between April 11-14.
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Concertgoers, sports fans and holidaymakers travelling to London and surrounding areas are among those urged to plan their journeys well in advance and ensure they allow extra time or make alternative travel arrangements.
Jonathan Wade, National Highways Senior Project Manager, said: "This is the final block of closures on the M25 as this scheme nears completion.
"We were grateful to drivers who listened to our advice during the three weekend closures last year and I’d again urge them to only use the motorway if their journey is absolutely necessary.
"Unfortunately, it’s simply not possible to carry out this scale of infrastructure improvement, which will benefit millions of people in the long term, without there being some degree of short-term disruption.
"We have spent months planning these closures, but they will still cause significant congestion and delays, so we are asking road users to allow extra time and use alternative routes where possible.
"Please follow our official diversion routes and not information from satnavs."
While the fundamental elements of the scheme which affect drivers day-to-day are still expected to be finished this summer, the final completion date for the project has now been moved back to spring 2026.
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