M25 closure: Details of second weekend closure of section of motorway - diversion routes

A section of the M25 in Surrey will be closed next month for a full weekend for the second time this year.

The motorway will be shut between junctions 9 (A243 Leatherhead) and 10 (A3 Wisley) from 9pm Friday May 10 to 6am Monday May 13.

The closure is for the installation of a new bridge consisting of 68 beams, each weighing 16 tonnes, and another four beams weighing 40 tonnes.

National Highways said it is part of a £317 million improvement project to increase the number of lanes to make it easier to enter and exit the M25 at junction 10.

A five-mile stretch of motorway between junction 11 at Chertsey and junction 12 with the A3 was closed between March 15 and 18. It was the first ever planned daytime closure on the M25 since it opened in 1986.

National Highways said three more weekend closures are planned between July and the end of the year.

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M25 closure diversions 

The M25 between junctions 9 and 10 will be closed in both directions from 9pm Friday May 10 to 6am Monday May 13.

Diversion route clockwise 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 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 for all but over-height vehicles:

Leave 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.

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National Highways

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 overheight 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.”