M25 junction 10

Latest updates

• 30 August 2024

  Closures from week starting Monday 2 September

  A3 Southbound from M25 junction 10 to A247 closed - Monday 2 September 10pm to Tuesday 3 September 5.30am

  We'll close the A3 southbound from the M25 Junction 10 to the A247 Send to amend the white lining and barrier system.

  M25 junction 10 Gyratory completely closed - Tuesday 3 September 10pm to Wednesday 4 September 5.30am

  We'll close the M25 J10 Gyratory in its entirety for carriageway construction work.

  This will stop anyone from leaving the M25 or the A3 to enter the J10 roundabout.

  Diversions

  M25 travelling Eastbound (towards Gatwick), to continue North or South on the A3

  If you are travelling eastbound on the M25 and want to leave the M25 and join the A3 to travel either north or south:

  • leave the M25 at Junction 11
  • follow the A320 towards Woking
  • then pick up the A245 to Sheerwater, West Byfleet and Byfleet
  • join the A3 at the Painshill Junction.

  M25 travelling Westbound (towards Heathrow), to continue North or South on A3

  If you are travelling westbound on the M25 and want to leave the M25 and join the A3 to travel either north or south

  • leave at Junction 9 and follow the A243 towards Malden Rushett and Chessington
  • at Hook Junction move onto the A309 Kingston Bypass, then onto the A307 towards Esher
  • at the end of A307 Portsmouth Road pick up the A245 and head towards Painshill Junction and the A3.

  A3 travelling Southbound (towards Guildford), to continue West on M25

  If you are travelling southbound on the A3 and want to continue your journey west on the M25:

  • leave the A3 at the Painshill junction
  • follow the A245 through Byfleet, West Byfleet and Sheerwater towards Woking
  • take the A320 in Woking to Junction 11 of the M25. 

  A3 Travelling Southbound (towards Guildford), to continue East on M25

  If you are travelling southbound on the A3 and want to continue your journey East on the M25

  • leave the A3 at the Painshill junction
  • follow the A245 towards Painshill
  • then take the A307 towards Esher and onto the A309 Kingston Bypass up to Hook Junction
  • at Hook Junction take the A243 towards Hook and Malden Rushett
  • join the M25 at Junction 9.  

  A3 Travelling North (towards London), to continue East on M25

  If you are travelling northbound on the A3 and want to leave the A3 and join the M25 to travel east:

  • leave the A3 at Send and take the B2215
  • follow the A247 through West Clandon, then take the A246
  • at Givons Grove roundabout, take the A24 Leatherhead Bypass then the A243
  • join the M25 at Junction 9.

  A3 Travelling Northbound (towards London), to continue West on M25

  If you are travelling Northbound on the A3 and want to continue your journey west on the M25:

  • leave the A3 at the Painshill junction
  • follow the A245 through Byfleet, West Byfleet and Sheerwater towards Woking
  • at Woking take the A320, which will take you to Junction 11 of the M25. 

• 23 August 2024

  Forthcoming closures

  B2039 Ockham Road North

  Our closures on the northbound B2039 Ockham Road North will be reinstated on Tuesday 27 August until Sunday 29 September to allow work on the utilities and to complete carriageway widening on the approach to the Ockham roundabout. Ockham Road North will be closed in one direction between Guilleshill Lane and the Ockham roundabout 24 hours a day.
  
  The diversion will be via Ockham Road North then left to Forest Road then left to Old Lane and then left to the A3 South and then back to Ockham roundabout.

  A3 Southbound off slip lane reconfiguration

  From Wednesday 28 August the lane configuration on the A3 Southbound where drivers exit for Junction 10 M25 will be changed from two lanes to one to allow for carriageway widening of the slip road. Work to widen the carriageway is expected to last for 8 weeks. Once complete, the slip road will revert back to two lanes. The left lane will be dedicated to access the M25 Anticlockwise towards Gatwick and the right lane will be dedicated to access the Junction 10 M25 Gyratory for all other destinations.
  
  On the approach to this exit, we urge drivers to be prepared to change lanes or allow other vehicles to merge to maintain traffic flows.
  
  To facilitate these changes, we will be closing the A3 South from the A245 Painshill to the M25 J10 overnight on Tuesday 27 August between 10pm and 5.30am.

  The diversion will be via the A245 towards Cobham and turning left to the A307 towards Esher, at the Scilly Isles roundabout turning right to the A309 Kingston Bypass towards the A3 Hook Junction.
  
  At the A3 Hook Roundabout take the 2nd exit to the A243 towards Chessington and Maldon Rushett. At the M25 J9 motorway traffic can join the M25 in either direction. Non-Motorway traffic will continue along the A24 to the Givons Grove roundabout taking the 2nd exit to the A246 towards Guildford. At the Clandon crossroads turning right to the A247 and rejoining the A3 South at Send.
  
  On Thursday 29 August we will be closing the A3 North bound from the B2215 Ripley to the M25 J10 for realignment of the traffic management to create a safe working zone for the construction of a central reservation bridge pier.

  The diversion will be via the B2214 to the A247 to Send taking the 3^rd exit to the A247 towards Clandon. At the Clandon crossroads traffic will turn left to the A246 towards Leatherhead and to the Givons Grove roundabout the 2^nd exit to the A24 toward the M25 J9. Traffic for the Motorway can join the M25 in either direction at this point. Non-Motorway Traffic will continue along the A243 towards Malon Rushett and Chessington to the A3 Hook roundabout taking the first exit to the A309 Kingston Bypass. At the Scilly Isles roundabout taking the first exit to the A307 towards Esher and Cobham. At Cobham turning right to the A245 to the A3 Painshill Junction where they can rejoin the A3 North.

  Traffic at the Ockham roundabout will use the B2215 south through Ripley Village to Send turning left to the A247 and following the main diversion route as above. Wisley Lane traffic will use a local diversion route via Wisley Lane to Pyrford Road onto the A245 through to Painshill.

• 11 August 2024

  Eastbound carriageway reopened to traffic

  We reopened the M25 eastbound carriageway on Sunday 11 August 7.30am after completing our work ahead of schedule.

  Thanks for your patience during the closure.

  Wisley Lane - Monday 12 to Wednesday 14 August overnight closure (10pm to 5.30am)

  Wisley Lane will be closed for UK Power Networks (UKPN) diversion works.

  Diversion for A3

  Traffic will travel:

  • by the A3 northbound to Esher common and return to the A245 Painshill
  • turn right onto the A245 towards Byfleet
  • turn left onto Pyrford Road and then left to Lock Lane. 

  Diversion for Wisley lane

  Traffic will travel:

  • by Lock Lane to Pyrford Road
  • then right to the A245 and continue to Painshill.

  Please don't use a Satnav when following any of our diversions. There's a risk it could direct you down an unsuitable road or back onto the network where it is closed.

• 17 July 2024

  M25 closures - see you next year!

  Thank you to everyone who changed their plans and took advice to avoid the Wisley to Chertsey stretch of the M25 last weekend while it was closed. As a result, we completed a critical piece of bridge installation and made significant progress with our improvements to junction 10.

  
  What’s also now important is there will be no more full weekend closures of the M25/A3 this calendar year. The two remaining closures will be next spring. We will give a minimum of four weeks’ notice for these closures so you can plan ahead, and we will avoid busy holiday periods.

  
  Please bear in mind the M25/A3 will still be closed at times over some weekends, and we will also be doing some 12 hour night closures on the M25 through the autumn.

  
  If you’d like to see more about what we did during last weekend's closure head to our page where we tell the story behind the closures. 

  
  Please check the ‘Upcoming closures’ section below for all our weeknight closures and lane restrictions so you can plan your journeys.

  
  Thanks again for your patience!

• 14 July 2024

  M25 junction 10 - 11 open to traffic ahead of schedule

  We reopened both carriageways over 7 hours ahead of schedule after installing the west bridge and a superspan gantry.

  This weekend's works mirrored our second full closure in May, when we installed the bridge on the east side of the junction.

  Thank you for bearing with us during the work. We're very grateful to all of you who took our advice, avoided the closure and completed your journeys in other ways.

• 17 June 2024

  Announcing our third full weekend closure

  We can confirm that the M25 between junctions 10 and 11 will be closed from 9pm Friday 12 July to 6am Monday 15 July 2024.

  We need to close the motorway to install a new bridge on the roundabout at Junction 10.

  Only travel if necessary

  We’re grateful to all drivers who avoided previous closures and completed their journeys in other ways. We urge you to do the same again.

  If you do travel, expect delays and please leave a lot of extra time for your journey.

  
  Diversion route

  The local diversion route is the same for both directions:

  Junction 10 to Junction 11

  North bound A3 to Painshill Junction, A245 towards Woking, and then A320 to M25 Junction 11.

  Junction 11 to Junction 10

  A320 south towards Woking, A245 towards Byfleet and Painshill junction, Southbound A3 to Junction 10.

  Avoiding the closure by taking the M25 via the Dartford Crossing may also be quicker.

• 14 June 2024

  M25/A3 Junction 10 - 15 June to 16 June 2024

  The M25 will be closed in both directions at its interchange with the A3 interchange at Junction 10 for 12 hours, between 9pm Saturday 15 June and 9am Sunday 16 June.

  Diversion

  Traffic will leave the M25 using the junction 10 / A3 slip roads, pass around the roundabout and re-join the motorway via slip roads.

• 17 May 2024

  Changes to traffic management: A245

  The A3 northbound exit slip road at Painshill (shown on the cross hatched section on the diagram below) is closed. This has improved the flow of eastbound traffic along the A245.

  

  We’ve also made changes to the sequencing of the traffic signals on all sides of the Painshill roundabout to favour the flow eastbound on the A245.

  The diversion route will be to remain on the A3 to the A244 Oxshott junction, return south along the A3 and exit on the southbound off slip to continue on the A245 towards Cobham or Byfleet.

  We apologise for any inconvenience this may cause.

  Here are answers to many of your questions about the A245.

  If you need any further information regarding this or any of the works being undertaken on the project, please contact the National Highways Customer Contact Centre by phone on 0300 123 5000 or alternatively via email: info@nationalhighways.co.uk

• 12 May 2024

  M25 junction 9 - 10 open to traffic ahead of schedule

  Both carriageways were reopened over seven hours ahead of schedule, after we completed installing 72 beams for the M25 East bridge.

  Specialist lifting gear was needed to move the beams into place, some of which weighed 40 tonnes each. In total, the job involved lifting 1,248 tonnes of material.

  We also installed a gantry spanning the entire width of the M25 carriageway.

  Thank you for bearing with us during the work.

• 15 April 2024

  Announcing our second full weekend closure

  We can confirm that the M25 will be shut between junctions 9 (A243 Leatherhead) and 10 (A3 Wisley) from 9pm Friday 10 May to 6am Monday 13 May 2024.

  This full closure is needed to install a new bridge.

  Only travel if necessary

  We’re grateful to all drivers last time who avoided the closure and completed their journeys in other ways. We urge you to do the same again.

   

  Diversion routes

  A 19-mile diversion route will be in place which uses the A3 and the A240.

  Please follow the diversion and don’t follow your SatNav.

  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.

  If you're driving an over-height vehicle you must follow a different diversion route to avoid a low bridge. This is your route:

   

  Further closures

  We intend to close the M25 for three more weekends this year.

  There will be no weekend closures in June.

  The remaining closures will take place between July and the end of 2024.

• 17 March 2024

  Bridge demolished and new gantry in place

  On an eerily quiet M25 we finished our work eight hours ahead of schedule and were able to reopen the motorway at 10pm tonight (Sunday 17 March). 

  We know many people changed plans and amended their journeys and we'd like to thank everyone who had to make different arrangements due to our work.  

  We will announce the date of our next closure as soon as we can.

  

• 01 March 2024

  More details about our M25 closure

  Last weekend we closed the A3 for a full weekend and demolished two bridges.

  Our next weekend closure will be for more demolition work, this time on the M25.

  It means the M25 between junctions 10 and 11 will be closed in both directions from 9pm on Friday 15 to 6am Monday 18 March.

  Diversion routes

  The local diversion route below will be in place which is the same for both directions:

  • Junction 10 -  Junction 11: North bound A3 to Painshill Junction, A245 towards Woking, and then A320 to M25 Junction 11.
  • Junction 11 -  Junction 10: A320 south towards Woking, A245 towards Byfleet and Painshill junction, Southbound A3 to Junction 10.

  Taking the M25 in the other direction to avoid our closure is also an option.

  Either way, if you do travel, please leave a lot of extra time for your journey.

  We carefully plan all our closures to limit disruption, but sometimes it's not possible to carry out all the work that's needed without a closure. We have planned all our closures to avoid holiday periods and key events in the area.

  The work needs to be carried out now to continue the good progress on the delivery of the scheme which is due to open to traffic next summer.

   

• 31 January 2024

  Announcing our next big closures

  

  Last weekend we completed Sandpit Hill bridge, the third of our eight bridges.

  It will be a few weeks before the bridge can be used as we still need to surface it, build the approach embankments and create the routes leading between Ockham Common, the bridge itself and Chatley Wood. Check back on this web page for when the bridge is available for use.

  We're now moving to a phase of work that involves some significant closures of the A3 and the M25.

  Our next closure is on:

   Friday 15 March 9pm to Monday 18 March 6am the M25 between junction 10 and 11 in both directions, for demolition works and gantry installation.

• 24 January 2024

  Completion of our third bridge

  This weekend sees the completion of the third of our eight bridges, which is Sandpit Hill bridge that will link Painshill to Ockham Common. At 91 metres long, this will be the longest bridge we will install on the project, and it will cross the M25 to the east of junction 10.

  Sandpit Hill bridge is for pedestrians, cyclists, and horse riders to safely travel between Ockham Common and Painshill. This is part of a new 5km route that will connect with many existing paths, tracks and bridleways that crisscross Wisley and Ockham Commons.

  We’ve been building the bridge supports that will carry the new bridge across the M25, and we’re now ready to install the second piece of the platform to complete the installation.

  The M25 will be closed anticlockwise between junction 10 at the Wisley interchange and Junction 9, and clockwise between the slip roads from 9pm Saturday 27 until 9am Sunday 28 January as we complete the installation of the footbridge at Sandpit Hill.

  Diversionary routes are:

  Vehicles over 14’6” on the M25 anticlockwise leave at junction 10 / A3 Wisley. Travel London bound on the A3 to the A245 Painshill, then A307 to A309, right into Hook Road then A243 to M25 junction 9 Leatherhead.

  Vehicles under 14’6” on the M25 anticlockwise leave at junction 10 / A3 Wisley. Travel London bound on the A3 to the A240, then A217 to M25 junction 8 Reigate.

  M25 clockwise between slip roads diversion: exit and re-enter junction 10 clockwise.

  The A3 will remain open during these closures.

  Throughout 2024 there will be other full weekend closures of the A3 and M25.

  The first two closures are: 

   Friday 23 February 9pm to Monday 26 February 6am the A3 will be closed in both directions between Send and M25 Junction 10 Wisley Interchange, for demolition works. 

   Friday 15 March 9pm to Monday 18 March 6am the M25 between junction 10 and 11 in both directions, for demolition works and gantry installation.

• 09 January 2024

  New Year, new bridge - Sandpit Hill footbridge

  Our improvements on the M25 junction 10/A3 Wisley interchange project continues to make good progress.

  As we continue with the construction of the new bridges, we are planning to install the third of our eight bridges, which is Sandpit Hill bridge that will link Painshill to Ockham Common. At 95 metres long, this will be the longest bridge we will install on the project, and it will cross the M25 to the east of junction 10.

  Sandpit Hill bridge is just for pedestrians, cyclists, and horse riders to safely travel between Ockham Common and Painshill. This is part of a new 5km route that will connect with many existing paths, tracks and bridleways that crisscross Wisley and Ockham Commons.

  We’ve been building the bridge supports that will carry the new bridge across the M25, and we’re now ready for the bridge to be installed.

  To allow us to safely carry out the installation of the new bridge, we’ll need to close the M25 over two extended overnight closures. Scroll down to the 'Upcoming closures' section of of this page for the overnight closure details. 

• 22 December 2023

  Back on 3 January

  The project is taking a break over the festive period.

  Our work finishes today (Friday 22 December) and will restart on Wednesday 3 January.   

  During this time our traffic management will remain in place.  Our CCTV team will be monitoring our work throughout the holiday and our traffic safety control officers will be on hand to help members of the travelling public if needed. Regular checks of our work sites will also be undertaken by our security officers during this time.

  If you have any queries or concerns regarding the project whilst we are closed, please contact the National Highways, please contact the Customer Contact Centre by phone on 0300 123 5000 or email: info@nationalhighways.co.uk.

• 28 November 2023

  Heathland restoration at Ockham and Wisley Commons

  We’ve completed most of the all-important heathland restoration work in several carefully selected areas, where heathland habitat once thrived. Since we started  work at the beginning of September, we’ve been clearing non-native trees originally planted for timber production to restore 16 hectares of heathland.

  Whilst the removal of trees may seem concerning at first, it is the first step to getting the heathland back to its natural state.

  Heathland restoration isn’t as simple as planting or sowing seeds – we need to expose historical seed bank. We do this by removing trees, stumps, and the leafy top layer known as a humic layer. This then exposes the seed bank of the heath plants below.

  

  In as little as one year, heathland can begin to re-grow, and as time passes this rare habitat will flourish and support local wildlife. We understand the importance for people to enjoy the nature and landscape, and have retained a buffer of trees around the project.

  

  We started the removal of trees and vegetation in September to avoid bird nesting season, which is usually between March and August.

  We also avoid disturbing the ground whilst amphibians and reptiles are hibernating during the winter, generally starting at the beginning of November.

  A team of ecologists put measures in place to ensure wildlife remained protected throughout the enhancement work.

  

  We've also committed to manage and monitor the restored and enhanced heathland areas for up to 25 years while they establish. You can read more about this important part of the project in our Heathland FAQ's here.

• 16 October 2023

  Wisley Lane bridge beams installed

  

  Good news – we’ve successfully installed all ten pre-cast concrete beams for our new bridge over the A3 at Wisley Lane.

  Our teams worked around the clock all weekend while the road was closed to get everything in place and reach this important milestone. This meant manoeuvring a 750 tonne crane onto each carriageway in turn and lifting all of the 80 tonne beams into position.

  

  In the future, this bridge will provide a new, safer route for walkers, cyclists, horse riders and drivers between the A3 Ockham Park junction and Wisley Lane.

  Wisley Lane is the second of eight new bridges to have its beams installed in the last three months. The first one was down at Stratford Brook where this same route will travel across the smallest bridge on our scheme and meet up with the roundabout at Ockham Park.

  We understand there’s never a good time to do roadworks and the impact this has on the people who live near or travel through our work.

  Thank you for your patience over the last few days while we’ve been making our improvements.

• 05 October 2023

  Bridges, beams and tunnels

  

  Our new bridge at Wisley Lane is making great progress and is just one of eight being built as part of our improvements.

  When complete, the Wisley Lane bridge will provide a new, safer route for walkers, cyclists, horse-riders and drivers between Wisley Lane and the A3 via Ockham Park roundabout.

  Together, along with free-flowing left turns, extra lanes and a series of upgrades around the A245 Painshill, our scheme will create safer, smoother journeys for everyone travelling through the south east’s busiest interchange.

  Down at Wisley, the beams for our bridge are almost ready to be lifted into position. We were due to install these in September, however this will now take place later this month.

  Please check the upcoming closures section for the most up to date information about our full A3 weekend closure.

  

  With so much going on above ground, you’d be forgiven for missing what’s been happening below ground.

  Before we can widen the A3 on each side of the junction 10 roundabout, we need to divert a major gas main that runs alongside the A3. This is no mean feat – not to mention avoiding the array of electricity and water supplies that crisscross this area too.

  Our tunnel boring machine, affectionately called Ada Florence, has completed her mission, having travelled 40 feet underground from one side of the A3 to the other.

  This new tunnel will allow us to lay a brand-new gas pipeline underneath the road and eventually disconnect the old one when everything is up and running.

  For all the latest updates, please subscribe to our newsletter or follow us on our Facebook page.

• 22 August 2023

  Major heathland restoration gets underway

  As well as making some significant safety improvements at junction 10 on the M25, we’re also restoring large areas of heathland across Wisley and Ockham commons.

  • Heathland is one of the UK’s most threatened environments
  • It is home to a number of rare invertebrates, reptiles, and bird species
  • Heathland has declined by 85% over the last 200 years

  Left on its own, heathland quickly grows into dense woodland and the animals and plants that depend on it disappear.

  The heathland that once stood here is now largely dominated by Scots pine. Much of this was planted for timber production after the Second World War and has, over several years, become overcrowded, supressing the ancient heathland below.

  What happens now?

  From early September, we’ll be carrying out further tree and vegetation clearance in several areas across both commons which will allow the heathland to regenerate.

  Although this may appear harsh, clearing areas of overgrown woodland will allow the heathland to regenerate and help bring back rare wildlife that inhabits it.

  Find out more by coming along to our public information event:

  Friday 1 September 2023 – 1.30pm to 4pm
  Ockham Bites Car Park
  Old Lane, Cobham KT11 1NA

  You can also read more in our heathland restoration and woodland management factsheet and find answers to frequently asked questions.

• 04 July 2023

  More bridges take shape

  

  We’ve started to build two bridges on the M25 that will carry the new, wider junction 10 roundabout over the motorway and provide much needed capacity.

  We’re using pre-cast concrete blocks which takes less time to build, uses less carbon and means we can keep the same number of lanes open for traffic.

  The first bridge we started building at Wisley Lane is rapidly taking shape. We’ll need to close the A3 in both directions for a whole weekend this autumn to lift the bridge beams into position – please check back for more information.

  

  We’ve also started to lay the foundations for the new bridge over Stratford Brook. This bridge will take a new road from Ockham Park onto Wisley Lane. The beams for this bridge will be the first to go in.

  Read more in our latest newsletter

  A245 improvements start soon

  

  As part of our scheme, we’re making significant improvements around the A245 at Painshill to reduce congestion and ease the flow of traffic.

  To help us get started, there will be full overnight closures on the A245 from Monday 10 July and a lane closure westbound from Monday 24 July between Painshill and Seven Hills Road.

  We’ll start our work during the school holidays to keep disruption to a minimum, however the A245 and surrounding roads are expected to be busy, so please leave plenty of time and continue to take extra care.

  Find out about the improvements we’re making in our dedicated factsheet.

• 13 June 2023

  A245 improvements start soon

  In July, we will be starting one of the next stages of our improvements project to deliver a package of road enhancements around the A245, Painshill roundabout and Seven Hills Road junction. 

  You may have seen us clearing vegetation and getting things ready to widen a section of the A245 in the direction of Seven Hills Road. 

  From Monday 10 July, there will be full overnight closures of the A245 and from Monday 24 July, there will be a permanent lane one closure westbound between Painshill and Seven Hills Road. 

  To find out more, come and visit one of our public information events: 

  Monday 19 June 2023 11am to 1pm	Tesco Brooklands, Barnes Wallis Dr, Weybridge KT13 0XF
  Friday 30 June 2023 11.30am to 1.30pm	Sainsbury’s Cobham, Bridgeway, Cobham KT11 1HW

  
  There’s more information about these improvements in our factsheet  

  Traffic management work 

  You’ll start to notice some changes to our traffic management on the A3/M25 junction 10 as we move our work from the central reservation to the verge. 

  • A3 – Ockham Park to M25 

  From mid-June, there will be a dedicated lane for drivers heading towards RHS Wisley from the Ockham Park junction. In addition, all narrow lanes will move towards the central reservation. 

  Although the number of lanes will not change, lane 1, after RHS Wisley, will be used for M25 traffic towards Heathrow only. Lane 2 will be used for both M25 traffic towards Gatwick and A3 journeys towards London. 

  • A3 – southbound off-slip for M25 

  From late June, there will be some changes on the southbound approach to the M25 junction. Lane 1 will be used for M25 traffic towards Gatwick only. Lane 2 will be used for both M25 traffic towards Heathrow and A3 journeys south towards Guildford. 

  • M25 junction 10 roundabout 

  Once traffic management on the approaches have been installed and people are used to the new layout, the outer lane will be closed to tie in with the dedicated lanes. 

  Please do be mindful of this change and ensure you’re in the correct lanes as you approach the junction, to prevent any additional congestion. 

• 26 May 2023

  Changes to traffic management

  We’ve made some changes to our traffic management so we can begin redirecting major services which run alongside the A3 such as gas and water.

  We need to do this before we can widen the road and add extra lanes as part of our improvements.   

  Our safe working area between the M25 and Painshill has now moved to the verge and northbound A3 traffic is running closer to the central reservation.

  The northbound exit slip at Painshill has been reduced to one lane to allow us to work safely in the verge.

  Upcoming closures

  We’ll need to carry out overnight closures on the A3 from Monday 5 June to move the narrow lanes between Ockham Park and the M25 closer to the central reservation.

  Once this is in place, there will be a dedicated lane on the A3 northbound for traffic in and out of Wisley Lane and Gardens.

  Please see full closure and diversion information below.

  Wisley Lane bridge

  We’ve almost finished building the central pier of the new Wisley Lane bridge and will shortly begin constructing the other piers on the verge where foundation work has already started.  

  Our piling rig has also been laying foundations on the M25 ready for two new gyratory bridges that will form the wider junction to ease congestion on the roundabout.  

• 05 May 2023

  New bridge takes shape

  You may have noticed some new concrete blocks have appeared in the central reservation of the A3. These are hollow pre-made blocks that will be filled with concrete and form the centre support of the new Wisley Lane link bridge we’re starting to build.

  This way of building the bridge means less disruption for road users as we can work in a smaller area and keep traffic flowing.

  In the future, a new road from Ockham Park roundabout will go over the A3 to Wisley Lane, providing a much safer route for vehicles, walkers, cyclists, and horse riders to the RHS Gardens and Wisley village 

  What happens next?

  Later this year, we will lift the new bridge deck beams into position and will need to close the A3. We’ll keep you updated on when we’re planning to do this.

  Elsewhere, our pilling rig has been making its way around the central reservation of the M25, drilling foundations for the new junction 10 roundabout bridges which will be wider to increase capacity and improve journey times.

  A245 and Painshill junction improvements

  At Painshill, we’ve removed some more lighting columns in the central reservation so the A3 can be widened from three to four lanes between here and the M25.

  We’ll soon start work to widen the A245 between the Painshill roundabout and the Seven Hills Road junction. Initially, there will be lane closures overnight while we carry out some surveys ahead of the main widening work which is due to start in July.

  We’ll keep you updated as we get closer to these works.

• 13 March 2023

  Extended hours closures (M25) – March/April 2023

  We need to carry out some overnight closures of the M25 this month to continue with our improvements.

  Our normal overnight closure times are usually between 9pm and 6am, however we will need to do some extended overnight closures finishing later at 8am instead. This is because we need more time to safely remove the gantries and make room for the new bridges as part of our scheme.

  We'll also be finishing some resurfacing in the Burpham area and will need to close the A3 between the Burntcommon entry slip and Dennis Interchange.

  Closure information

  • Friday 17 March – 9pm to 6am
    The M25 will be closed anticlockwise overnight between junctions 11 for Chertsey and junction 10 for the A3.
    
    
  • Extended closure: 9pm Saturday 18 to 8am Sunday 19 March
    The M25 will be closed anti-clockwise overnight between junctions 11 and 10.
    
    
  • Monday 20 to Friday 24 March – 9pm to 6am
    The A3 will be closed southbound from the A247 Burntcommon entry slip to A25 Dennis Interchange for resurfacing. For more details, please see our maintenance page.
    
    
  • Monday 27 to Friday 31 March – 9pm to 6am
    The M25 will be closed clockwise overnight between junctions 9 for Leatherhead and junction 10.
    
    
  • Extended closure: 9pm Saturday 1 to 8am Sunday 2 April
    The M25 will be closed clockwise overnight between junctions 9 and 10.

  Diversion information

  • M25 anti-clockwise
    Drivers will be diverted from junction 11 along the A320 and A245 through Byfleet to join the A3 at Painshill - view diversion route map
    
    
  • M25 clockwise
    All vehicles under 14’6” will be diverted from the M25 at junction 8 (Reigate) along the A217, A240 and join the A3 at Tolworth. Vehicles over 14’6” will be diverted from the M25 at junction 9 (Leatherhead) along the A243, A309 and A307 through Esher and A245 to join the A3 at Painshill - view diversion route map
    
    
  • A3 southbound
    Drivers travelling from London towards Guildford will be diverted from the Ockham roundabout and follow the B2215 and A247 towards West Clandon and use A246 and A31 to join the A3 at Down Lane - view diversion route map

• 12 December 2022

  Start of work

  We’re about to start our work to improve M25 junction 10/A3 Wisley interchange.

  You’ll see us removing trees and other vegetation first of all. Find out more about why we’re doing this by reading our Heathland Restoration and Woodland Management factsheet. Please also read our your questions answered factsheet – it may answer any questions you have.

  Introduction of narrow lanes on the A3 and footpath diversions

  We’ll be introducing temporary changes to the road layout on the A3 and M25 junction 10 slips to help keep traffic flowing smoothly and create a safe working area for our team. We’ll be putting narrow lanes in place on the A3 and reducing the speed limit to 50 mph – the narrow lanes and lower speed limit means we can keep three lanes open.

  We’ll also be working around the common areas and at times you may find that we have footpath diversion routes in place.

  We’ll usually work between 7:30am and 6pm Mondays to Fridays, and 8am to 7pm on Saturdays, so there may be times when you won’t see anyone on site. We’ll also need to carry out some work overnight using road closures. You can find more information about our planned closures over the next few months below. We apologise for any inconvenience this may cause to your journey.

  Our improvements will be completed by summer 2025, and you can find out more about what is planned when on our project timeline.

  Planned closures – December 2022

  Our planned overnight closures for December are below.  These closures will allow us to carry out some survey works in the central reservation and verge areas along the A3.

  To help reduce the impact to road users and local community during Christmas and New Year period, we’ll be carrying out our closures to set up the temporary changes to the road layout on the A3 and M25 in January 2023. We will share more details about these closures and changes shortly. 

  Date and times	Closure	Diversion
  Monday 12 to Wednesday 14 December 10.30pm to 05.30am	A3 southbound from M25 junction 10 to Ockham roundabout	Motorway traffic will be diverted onto the M25 anticlockwise to M25 J9 where they will exit and take the A24 South towards Leatherhead/Dorking and then via the A246 and A247 to Clandon Cross roads. Non-motorway traffic will be diverted via the Painshill junction, A245 towards Cobham, A397 towards Esher.  The A309 towards A3 Hook and A234 towards M25 junction 9, A24 South towards Leatherhead/Dorking and then via the A246 and A247 to Clandon Cross roads.
  Thursday 15 December 10.30pm to 05.30am Friday 16 December 11pm to 6am	A3 southbound from Painshill junction to M25 junction 10	Motorway traffic will leave the A3 via Painshill and follow the A24 towards Cobham where they will take the A307 at Between Streets towards Esher and the A309 towards the A3 Hook. From here the A243 will continue to the M25 junction 9. Non-motorway traffic diversion  will follow the same route as above but will continue on the A24 South towards Leatherhead/Dorking and then take the A246 South to the Clandon Cross Roads where they will turn right to the A247 and to the A3.

  We'll be keeping this webpage updated with the latest information, and you can register to get our email newsletters using the 'Sign up for updates' button on this page.

  If you have any queries, you can contact the team on M25j10@nationalhighways.co.uk at any time during the scheme.

• 21 July 2022

  Preparation work and the opportunity to meet the team

  While our main work will start in mid-September and be completed by Summer 2025, we'll be carrying out some work to help prepare for construction from mid-June.  This preparation work will reduce the risk of any delays, and includes:

  • Construction of our site compound at Nutberry Fruit Farm in June, and our compound at Wisley Airfield in July
  • Trial and bore hole surveys to confirm the locations of existing utilities and reduce the risk of finding any surprises. This work will be carried out at night and, in some locations, we will need to close footpath or road lanes.
  • Utility diversions at both Ockham interchange and Painshill junction, these will require traffic management to be put into place
  • Preparation work on Elm Lane
  • Installation of CCTV

  Want to know more about the scheme?

  Thank you to everyone who attended one of our recent face-to-face or virtual information events.

  We'll be keeping this webpage updated with the latest information, and you can register to get our email newsletters using the 'Sign up for updates' button on this page.

  If you have any queries, you can contact the team on M25j10@nationalhighways.co.uk at any time during the scheme.

• 12 May 2022

  Development Consent Order given the green light

  Today we welcomed the Secretary of State for Transport decision to grant us a Development Consent Order, which allows us to proceed with our project to improve the M25 junction 10/A3 Wisley interchange.

  This junction is one of the busiest on our network, with almost 300,000 journeys every day. Due to the volume of traffic and the resulting queues, the junction and the surrounding roads have a high number of incidents. Our proposals will deliver much needed additional capacity, better connectivity for people and businesses, and safer journeys for everyone.

  This vital work will generate more than 400 jobs, including around 20 apprenticeships and graduate jobs, and deliver an environmental legacy that will restore rare heathland in Ockham and Wisley Commons for years to come.

  You can view the decision documents the Planning Inspectorate website.

  Keeping you informed

  We plan to start work in autumn 2022. To make sure you know what’s coming and to keep everyone up to date we will:

  • issue regular project newsletters – you can join the mailing list by signing up on this page
  • run online briefings in June to provide the opportunity to ask the team any questions, as well as providing information about our online portal
  • organise face-to-face events using our engagement van at local venues. These will provide information about the scheme and allow us to answer any questions you and others may have. We will provide you with more details of these on this page soon.

• 21 October 2021

  Decision deadline extended to May 2022

  The Secretary of State for Transport has asked for more time to make a final decision on whether we can continue with our proposals to improve the M25 junction 10/A3 Wisley interchange.  

  In his statement, the Secretary of State sets out he is extending the deadline to 12 May 2022 to allow for further consideration of environmental matters.

  We’re committed to delivering the improvements at M25 junction 10 and remain confident that our proposals will deliver much needed additional capacity, with better connectivity for people and business, and safer journeys for everyone. This junction is one of the busiest on our network, with almost 300,000 journeys every day.

  Thank you to everyone for their engagement and contribution in the development of the scheme to date. We will continue to work with the Planning Inspectorate, local stakeholders and local authorities until the Secretary of State makes his decision.

  Further information regarding the extension and any additional consultations will be posted on the Planning Inspectorate’s website.

• 12 May 2021

  Decision deadline extended to November 2021

  The Secretary of State for Transport has asked for more time to make a final decision on whether we can continue with our proposals to improve the M25 junction 10/A3 Wisley interchange.  

  In his statement, the Secretary of State sets out the 6-month extension is to allow for further consideration of environmental matters, and provides the new deadline of 12 November 2021.

  Thank you to everyone for their engagement and contribution in the development of the scheme to date. Further information regarding the extension and any additional consultations will be posted on the Planning Inspectorate’s website.

  We remain confident that our proposals will deliver much needed additional capacity, with better connectivity for people and business, and safer journeys for everyone. This junction is one of the busiest on our network, with almost 300,000 journeys every day. Due to the volume of traffic and the resulting queues, the junction and the surrounding roads have a high number of incidents.