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Final Weekend Closure of M25 Junction 10 Slip Roads Underway for Resurfacing Completion

National Highways enforces closure of Wisley Interchange slip roads from May 16–19, marking the last full weekend shutdown for the £317 million improvement project.

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Overview

  • All entry and exit slip roads at the M25 Junction 10 Wisley Interchange are closed from 9pm Friday, May 16, to 6am Monday, May 19, for final resurfacing work.
  • The main M25 and A3 carriageways remain operational, but six diversion routes have been implemented, adding an estimated 20–30 minutes to journeys under light traffic conditions.
  • Drivers are advised to plan ahead and consider alternative routes, including the M3, M23, A24, A316, and A23 corridors, to navigate around the closure.
  • This weekend's closure is the final full weekend shutdown planned for the resurfacing phase of the broader improvement project, set to conclude in spring 2026.
  • The £317 million project aims to reduce congestion, improve traffic flow, and enhance safety at one of the UK’s busiest motorway junctions, used by over 300,000 vehicles daily.