M25 closure update for March: junctions 10 and 11

National Highways is delivering the M25 Junction 10 Upgrade scheme. The M25 will be closed in both directions between junctions 10 and 11 from:

9pm on Friday 21 March until 6am on Monday 24 March 2025

As part of this scheme, National Highways have built a new central gyratory to improve the capacity for vehicles moving between the M25 and A3. National Highways have demolished one old bridge, this final planned M25 weekend closure will see the second old bridge demolished. 

Diversion routes

During the closure, motorists travelling clockwise will be diverted from the M25 at junction 10 to use the A3 northbound travelling via the A245 at Painshill and the A320 to rejoin the M25 at junction 11. Motorists travelling anticlockwise will be diverted from the M25 at junction 11 to join the A320, then the A245 to Painshill to use the A3 southbound to rejoin the M25 at junction 10.

National Highways are providing advance notice of these works and will be updating our website and social media feeds, as well as sharing in the press and regional media outlets. Requests for further information should be directed to our M25 Junction 10 scheme website M25 Junction 10 Website.