National Highways is delivering an M25 Junction 10 upgrade scheme, constructing a new central gyratory to improve the capacity for vehicles moving between the M25 and A3. The project is due to finish in the summer of 2025.
There are four planned weekend closures coming up in the next few weeks, including two full closures of the M25 between Junctions 10 and 11 in March. These closures are necessary for gyratory and bridge demolition works:
- Junction 10 at M25 and A3, all entry and exit slips and central gyratory – 9pm on Friday 21 February to 6am Monday 24 February 2025 (M25 and A3 remain open).
- M25 closed between J10 and J11 – 9pm on Friday 7 March to 6am Monday 10 March 2025.
- M25 closed between J10 and J11 – 9pm on Friday 21 March to 6am Monday 24 March 2025.
- A3 closed north of the M25 between J10 and Painshill Junction, - 9pm on Friday 11 April to 6am Monday 14 April 2025.
See M25 junction 10 upgrade scheme for more details and diversion routes.
