Second M25 full weekend closure announced as National Highways upgrades Junction 10

Junction 10 on the M25 Credit: PA

National Highways has announced the date of the second full closure of the M25 near to Junction 10, as it works to upgrade the junction.

The UK's busiest motorway will close again, this time between Junction 9 for Leatherhead and Junction 10 for the A3.

The closure will be put in place from 9pm on Friday 10 May and will last until 6am on Monday 13 May.

During the closure National Highways will install a new bridge, consisting of 68 beams, each weighing 16 tonnes, and another four beams weighing 40 tonnes.

Drivers are being warned that the closure could cause more disruption than the previous one, due to the length of the diversion.

Jonathan Wade, National Highways Senior Project Manager, said: “This is far from a repeat of the previous closure, as the alternative routes are longer and will be different for over height vehicles and all other traffic.

“Drivers listened to our advice last time which reduced motorway traffic levels by over two thirds and meant delays were limited.

“Our advice again is please only travel if absolutely necessary and make sure you give yourself extra time if you do choose to use the M25.”

National Highways has now published its official diversion routes, but drivers are being urged to only use them if essential.

Diversion route clockwise (from Gatwick towards Heathrow) for most traffic:

Leave the 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 turn left onto the A3 Portsmouth, Guildford. Continue for 9½ miles to the M25 and re-join the motorway at junction 10.

Diversion route anticlockwise (from Heathrow towards Gatwick) for most traffic:

Leave the M25 at junction 10 to join the A3 towards London. After 9½ miles at the Hook 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.

The carriageway between junctions 9 and 11 carries between 4,000 and 6,000 vehicles per hour in each direction between 10am and 9pm on a weekend.

Up to 270,000 vehicles pass through this junction each weekday and is one of the busiest stretches of road in the UK.

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