The M25 will be shut between junctions 9 (A243 Leatherhead) and 10 (Wisley) from 9pm Friday 10 May to 6am Monday 13 May 2024. This is to allow National Highways to install a new bridge.
The diversion route is between Junctions 8 and 10. Drivers are urged not to follow their SatNav, but to follow the diversion signs. The details are:
Clockwise diversion for all but over-height vehicles:
- leave M25 at junction 8, A217 (Reigate)
- follow the A217 London, Sutton, (A240) Kingston
- after 3½ miles turn left onto the A240 Epsom, Kingston
- after 3 miles at the Esso roundabout, turn right onto the A24 (A240) Kingston
- continue for 3 miles and at the Tolworth interchange turn left onto the A3 Portsmouth, Guildford
- continue for 9½ miles to the M25 and re-join the motorway at junction 10
Anticlockwise diversion for all but over-height vehicles:
- leave M25 at junction 10 to join the A3 towards London
- after 9½ miles at the Tolworth interchange leave the A3 turning right onto the A240 Epsom, Reigate
- continue for 3 miles to the Esso roundabout and turn left onto the A240 Reigate
- continue for 3 miles then turn right onto the A217 Reigate, M25
- after 3½ miles turn left to re-join the M25 motorway at junction 8.
Drivers using the signed diversion route won’t be subject to any Ultra Low Emission Zone (ULEZ) charges that may usually apply. The Ultra Low Emission Zone will remain in force on all other routes in London across the weekend.
There will three more closures of the M25 between July and December during 2024.
For further details of M25 and A3 closures at Junction 10, see the National Highways website nationalhighways.co.uk/our-roads/south-east/m25-junction-10/
What’s to stop clockwise M25 drivers from continuing on to J9 (since J8 to J9 is open for over-height vehicles) and then using a route along the A246 to skip the J9-J10 closure before heading towards the A3 through Horsley or Effingham? It’s much shorter than the official diversion but the potential for traffic chaos round here is unlimited.