M25 junction 3

Latest updates

• 25 October 2023

  East bridge works complete

  We’ve completed our work to strengthen the east bridge ahead schedule.

  The reinforcing steel plates, which were reaching the end of their serviceable life, have been replaced with stronger, corrosion-resistant carbon fibre rods. This work will keep the structure safe and reduce the risk of emergency repairs in the future.

  We’ve now taken away all of the lane restrictions on the east bridge and the junction is now operating as normal.

  We won’t need to do any more work this year but will need to come back to carry out the same work on the west bridge.

  Work is currently planned to start in summer 2024.

  Please check back here for updates. 

• 17 October 2023

  Planned overnight closures this week

  We’re installing the final few carbon fibre rods in lane one of the east bridge. This means we’ll soon be able to start putting the surfacing layers and road markings back in place in this lane.
  
  We’ll need some overnight closures to complete this resurfacing work and some other activities. The steel barrier which has been in place since July for safety is due to be removed and will be replaced with traffic cones for a short period of time. This will also allow the new road surface to set before vehicles can drive over it.
  
  Closure information
  
  We’ll need to close the east bridge overnight between 10pm and 5am on Tuesday 17 and Thursday 19 October 2023.

  We were due to carry out this work between Wednesday 11 and Friday 13, but had to cancel due to poor weather conditions. Our work (particularly the early stages of resurfacing which will enable us to remove the steel safety barrier) is particularly weather dependent.
  
  Please continue to check this webpage for the latest information.
  
  Diversion information

  • Motorway traffic will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.
  • Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

  Traveling to Brands Hatch?
  
  If you’re planning on travelling to the circuit, we recommend that you plan ahead and allow extra time for your journey.
  
  Alternative routes into the circuit are also available via M20 junction 2 or M26 junction 2a and the A20 London Road northbound.

• 02 October 2023

  Progress update

  

  Our work to install new carbon fibre rods in lane one of the east bridge at the Swanley Interchange is now over 50% complete.

  You'll continue to see us working here overnight next week from within our safe working zone. The work we're doing will help strengthen the bridge and will reduce the likelihood of disruption caused by emergency repairs.

  Travelling to Brands Hatch this October?

  The finale of the Kwik Fit British Touring Car Championships and Bennetts British Superbike Championships will be taking place at Brands Hatch in October.

  • Saturday 7 to Sunday 8 October
  • Friday 13 to Sunday 15 October

  If you’re planning on travelling to the circuit on either of these two weekends, we recommend that you plan ahead and allow extra time for your journey.

  Alternative routes into the circuit are also available via M20 junction 2 or M26 junction 2a and the A20 London Road northbound.

  Plan your journey

• 18 September 2023

  Overnight closure - Monday 18 September

  Our work to strengthen the bridges over the M20 at the Swanley Interchange is well underway.

  We’ve removed the road surface in lane one and have been getting the east bridge ready for the installation of the new carbon fibre rods.

  Closure information 

  We’ll need to close the east bridge overnight from 10pm on Monday 18 until 5am on Tuesday 19 September to safely carrying out more sandblasting.

  Additional overnight closures may be required on Tuesday 19 and Wednesday 20 September, however please continue to check this webpage for the latest information.
  
  Diversion information

  • Motorway traffic will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.
  • Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

• 25 August 2023

  East bridge reaches halfway point

  We’re almost halfway through our work to strengthen the east bridge over the M20 at the Swanley Interchange

  Next week, we’ll need to move our safe working area across to the other lane (left hand side) and need to close part of the roundabout overnight to make this change safely.

  Closure information – change in road layout

  • The eastern section of the roundabout between the M20 eastbound entry and westbound exit slip roads will be closed overnight (10pm to 5am) from Tuesday 29 August until the morning of Sunday 3 September 2023.

  Once open again, there will still be lane closures, however rather than our workforce being on your right, they'll be on your left.

  Our traffic management layout on the M25 junction 3 clockwise exit slip road will remain unchanged.

  Diversion information

  • Motorway traffic will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.
  • Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

• 14 August 2023

  Overnight closures

  We've started to install the new carbon fibre rods into the bridge deck which will increase its strength and keep the structure safe. There are some more overnight closures this week while we carry out some additional sandblasting.

  Closure information

  To do this safely, we’ll need to close the roundabout between the M20 eastbound entry and westbound exit slip roads overnight (10pm-5am) on Monday 14 and Wednesday 16 August.

  Diversion information

  Drivers will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.
  
  Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

• 28 July 2023

  Works update and overnight closures

  

  Our work to strengthen the bridges over the M20 at the Swanley interchange is well underway.

  We’ve recently removed the steel strengthening plates from lane two on the eastern section of the roundabout. The underlying bridge deck is now exposed which means we can continue with additional concrete repairs.

  Soon we’ll be able to install new carbon fibre rods to make the bridge stronger, safer and able to better cope with predicted future traffic loads. Before we can do that, we need to prepare the road surface using a technique called sandblasting.

  Closure information

  To do this safely, we’ll need to close the roundabout between the M20 eastbound entry and westbound exit slip roads overnight (10pm-5am) from Wednesday 2 August to the morning of Saturday 5 August 2023.

  Diversion information

  Motorway traffic will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.

  Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

• 20 July 2023

  Work gets underway

  We’ve created a safe working area for our team and can start our repairs to the bridges at junction 3 on the M25 in Kent.

  We're starting with the eastern section and there are now lane closures here including the M25 junction 3 clockwise exit slip road. We’ll keep an eye on the traffic lights at the junction to make sure traffic flows as smoothly as possible.

  We’ve removed the road surface and will survey and mark up the locations of underlying steel plates which need to be replaced to keep the structure safe.

  When we remove these plates, the bridge deck will become exposed. This will allow us to inspect the condition of the bridge deck and repair any areas of concrete that may be damaged.

  After this, we’ll be able to install new carbon-fibre rods to make the bridge stronger and reduce the need of carriageway repairs here in the future.

  Brands Hatch Superbike Championships 2023

  The Bennetts British Superbike Championships take place this weekend at Brands Hatch from Friday 21 to Sunday 23 July.

  If you’re planning on travelling to the circuit, we recommend that you plan ahead and allow extra time for your journey. Alternative routes into the circuit are available via M20 junction 2 or M26 junction 2a to join the A20 London Road northbound.

  We’re also expecting more journeys to be make to the coast and Kent ports now that the summer holidays are here.

  Plan your journey

• Work starts soon

  We’re carrying out essential repairs to the east and west bridges at junction 3 on the M25 in Kent.

  The first thing we need to do is install a temporary barrier on the east bridge which we'll be working behind.

  Once this barrier has been installed, there will be lane closures during the day and overnight around the eastern section of the interchange, including the M25 junction 3 clockwise exit slip road. This will allow us to work safely and keep traffic moving through the junction.  

  Closure information

  The eastern section of the roundabout, between the M20 eastbound entry and westbound exit slip roads, will be closed overnight between 10pm and 5am from Saturday 8 and Sunday 9 July 2023.

  Diversion information

  Motorway traffic will be diverted via either M20 eastbound to junction 2 and return or M25 junction 4 and return.

  Non-motorway traffic will be diverted via A20, A224, A25 and A225 to join the A20 again at Farningham.

  Click here to open diversion map in new window

  Please continue to check back for updates.