M25 junction 28 improvements

Latest updates

• 16 January 2025

  Upcoming traffic management

  Overnight M25 anticlockwise carriageway closure, junctions 29 to 27
  The M25 anticlockwise carriageway will be closed overnight between junctions 29 and 27 on Tuesday 14 January to Friday 17 January (10pm-5am each night) and Sunday 19 January (10pm – 5am).

  During the closures, a signed diversion will be in place by:

  • the A12 Eastern Avenue
  • the A406 North Circular
  • using the M11 to rejoin the M25 at junction 27.

  When planning our road closures, we liaise with Transport for London (TFL) to ensure that the ULEZ cameras are not in operation along the signed diversion route. However, if road users decide to leave our official signed diversion route during closures, they may still need to pay the ULEZ fee.

  M25 J28 anticlockwise entry slip weekend closure

  The M25 junction 28 anticlockwise entry slip will soon be opening to traffic, providing safer and smoother journeys for our road users. This will be the first completed section in a series of improvements to junction 28.

  To complete the construction and safely open the new M25 slip road, we will need to close the existing anticlockwise entry slip at junction 28 from 10pm Friday 17 January to 5am Monday 20 January.

  During the closure, a signed diversion will be in place by following the M25 clockwise at junction 28 and re-joining the anticlockwise carriageway at junction 29.

  A12 eastbound overnight closures 

  The A12 eastbound at the M25 junction 28 will be closed from Monday 20 January to Friday 24 January, 10pm – 5am each night, to allow us to complete the tie-in works on the slip road.

  The A12 will be closed directly underneath the M25 junction 28 and Brook Street roundabout. During the closure, traffic will need to exit the A12 eastbound to join the Brook Street roundabout, where they can rejoin the A12 to continue their journey. 

  Thank you for your ongoing patience while we continue to deliver these works.

  ‘Superspan’ gantry installations

  Two ‘superspan’ gantries are set to be installed over the M25 at junction 28 as part of our major improvements scheme. Spanning the entire width of the motorway carriageway, with one measuring 54m and the other 44m, they will display the overhead road signage and information. 

  For safety, the installations need an overnight closure of the M25 in both directions between junctions 27 and 28 from 10pm Saturday 25 January until 6am Sunday 26 January.

  The M25 clockwise carriageway between junctions 27 and 28 will be closed from 10pm Saturday 25 January until 6am Sunday 26 January to undertake these works. 

  During the closure, please leave the M25 at junction 27 where a signed diversion will be in place via the M11, A406 North Circular, A12 Eastern Avenue, and the A12 Colchester Road, where you can re-join the M25 at junction 28. 

  The M25 anticlockwise carriageway between junctions 28 and 27 will be closed from 10pm Saturday 25 January until 7am Sunday 26 January. 

  During the closure, please leave the M25 at junction 28, where a signed diversion will be in place via the A12 Colchester Road, A12 Eastern Avenue, A406 North Circular Road, and the M11 Motorway, where you can re-join the M25 at junction 27.

  When planning our road closures, the team liaises with Transport for London (TFL) to ensure that the ULEZ cameras are not in operation along the signed diversion route. However, if road users decide to leave our official signed diversion route during closures, they may still need to pay the ULEZ fee.

  Please remember that closure details can change at short notice. For the most up-to-date information, please visit our daily closures page. Our travel alerts give details of live incidents on our network.

• 13 January 2025

  Traffic management update

  M25 J28 anticlockwise entry slip weekend closure

  The M25 junction 28 anticlockwise entry slip will soon be opening to traffic, providing safer and smoother journeys for our road users. This will be the first completed section in a series of improvements to junction 28.

  To complete the construction and safely open the new M25 slip road, we will need to close the existing anticlockwise entry slip at junction 28 from 10pm Friday 17 January to 5am Monday 20 January. 

  During the closure, a signed diversion will be in place by following the M25 clockwise at junction 28 and re-joining the anticlockwise carriageway at junction 29.

  M25 overnight closure for gantry installation 

  A new overhead super-span gantry will be installed over the M25 at junction 28. The installation will require an overnight closure of the M25 in both directions between junctions 27 and 28. These closures will require two different diversion routes for road users to follow, depending on the direction they are travelling.

  The M25 clockwise carriageway between junctions 27 and 28 will be closed from 10pm Saturday 25 January until 6am Sunday 26 January to undertake these works. 

  During the closure, please leave the M25 at junction 27 where a signed diversion will be in place via the M11, A406 North Circular, A12 Eastern Avenue, and the A12 Colchester Road, where you can re-join the M25 at junction 28. 

  The M25 anticlockwise carriageway between junction 28 and 27 will be closed from 10pm Saturday 25 January until 7am Sunday 26 January. 

  During the closure, please leave the M25 at junction 28, where a signed diversion will be in place via the A12 Colchester Road, A12 Eastern Avenue, A406 North Circular Road, and the M11 Motorway, where you can re-join the M25 at junction 27.

  When planning our road closures, the team liaises with Transport for London (TFL) to ensure that the ULEZ cameras are not in operation along the signed diversion route. However, if road users decide to leave our official signed diversion route during closures, they may still need to pay the ULEZ fee.

• 08 January 2025

  Upcoming junction 28 traffic management

  We'll soon be finalising the new M25 anticlockwise entry slip and A12 carriageway renewals.

  Closures

  To work safely, we'll need the following weekend and overnight road closures.

  11pm Friday 10 January to 5am Monday 13 January - M25 junction 28 anticlockwise entry slip weekend closure

  During the closure, a signed diversion will be in place by:

  • joining the M25 clockwise at junction 28
  • then leaving the M25 at junction 29 to travel anticlockwise. 

  Tuesday 14 January to Friday 17 January - M25 anticlockwise carriageway closed overnight (10pm-5am each night) between junctions 29 and 27

  During the closure, a signed diversion will be in place by:

  • the A127 Eastern Avenue
  • the A406 North Circular
  • using the M11 to rejoin the M25 at junction 27. 

  When planning our road closures, we liaise with Transport for London (TFL) to ensure that the ULEZ cameras are not in operation along the signed diversion route. However, if road users decide to leave our official signed diversion route during closures, they may still need to pay the ULEZ fee.

  Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

• 30 December 2024

  2024 Highlights

  As we approach the final year of construction, let’s take a moment to look back on the significant strides made on the scheme this year, as we work to provide a safer, more integrated network for road users.

  Structures

  • The majority of major works on all four bridge structures have been completed.
  • The installation of six steel girders for Duckwood Bridge, measuring 40 metres in length and weighing up to 113 tonnes, the largest beam lift of the scheme.
  • Successfully installed 27 precast concrete units to extend the Grove Brook culvert, using 650 and 150 tonne cranes to expertly lift them into place.
  • Completion of all utility’s diversions, such as mains water, power, sewage and communications.
  • The gantry bases have been constructed in readiness to install two new overhead gantries, spanning the width of the M25 carriageway.

  Earthworks

  • Constructed 15 concrete earth retaining walls, known as RECo walls. These are comprised of prefabricated concrete panels, designed to build space efficient earthwork retaining walls.
  • Shaped the landscape for the new two-lane loop road that will link the M25 to the A12.

  Landscape

  • The scheme's extensive landscaping plans continue, with the planting of 21,000 trees and shrubs to commence in January 2025.
  • Completion of 3 attenuation ponds across the scheme. These are used to retain and slowly release rainwater in a storm, to not overload our surrounding rivers.

  Roads

  • Surfacing of the new M25 B Track Entry Slip has been completed this month, including line painting, in readiness for traffic to be switched over early in the New Year.
  • The A12 Eastbound Exit Slip is now partially surfaced, with finishing works including street lighting, safety railings, before the new slip road can be opened in the New Year.

  We would like to thank everyone for their patience and support whilst we continue to deliver these much needed improvements.

  The project team would like to wish you a Merry Christmas and a Happy New Year!

   

• 20 December 2024

  One more Christmas story from the team

  Not content with the massive food and essentials collection they did, the team has now been busy at the Harold Hill Christmas Light event in Essex.

  They made sure all visitors to Santa's grotto had a little gift to mark their visit. This is the second year they've supported this event.

   

  

   

• 10 December 2024

  Christmas at Junction 28

  As we start the Christmas countdown, we’ve not only been busy on the road.

  We’ve also been getting serious about collecting food and gifts for local people.

   

  

   

  We’ve been rounding up donations for the Trussell Trust in Brentwood, including:

  • toys for children
  • food
  • household essentials

  We’d like to say a big ‘thank you’ to everyone who contributed to our collection.

  We love making a difference to the people we’re working so close to at junction 28.

  It’s important that we leave a legacy beyond the road. This is one of the ways we can do that.

   

  

   

• 25 November 2024

  Clockwise exit slip weekend closure

  The M25 clockwise exit slip at junction 28 will be closed from 9pm Saturday 30 November until 10pm Sunday 1 December. 

  At the same time the M25 clockwise at junction 28 will be reduced to one lane while we carry out this work. At 7am Sunday 1 December, the road will reopen to 3 lanes, leaving one lane closed for the remainder of the day, until 10pm. 

  There will be a signed diversion in place via the M25 clockwise to junction 29 returning on the anticlockwise carriageway to junction 28.

  Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England website. Our travel alerts give details of live incidents on our network.

• 07 November 2024

  Upcoming traffic management

  M25 junction 28 clockwise exit slip full weekend closures

  The M25 clockwise exit slip at junction 28 will be closed for two weekends from 11pm Friday 8 November to 5am Monday 11 November and again at 11pm Friday 15 November to 5am Monday 18 November. 

  The closures will be the next in a series of weekend closures needed, with more dates to be announced, to build the base for a new overhead gantry that will span the width of the M25. Over the next two weekends, we will be pouring the concrete foundations needed to support the gantry. 

  Diversion

  During the closure we'll put a signed diversion in place:

  • by the M25 clockwise to junction 29
  • returning on the anticlockwise carriageway to junction 28  

• 07 October 2024

  Current A12 eastbound lane closure traffic management

  We currently have one lane closed on the A12 eastbound approach to the M25 J28 interchange, next to our site compound. The lane will be closed until summer 2025 while we construct the new A12 exit slip and its connections to the existing A12. 

  Letters and other external communications were sent as the closure continued, but any additional information can be found on the website or by contacting the project team.

• 27 September 2024

  Work continues on the overhead gantry base

  We'll soon be continuing the construction of the new overhead gantry base.

  During recent weekend closures of the clockwise exit slip, we made great progress preparing the ground for the gantry base foundations.

  Weekend closure 

  M25 clockwise exit slip at junction 28 -  Friday 4 October 11pm to Monday 7 October 5am

  We need the weekend closure for work on the base that will support the gantry.

  Diversion

  During the closure we'll put a signed diversion in place:

  • by the M25 clockwise to junction 29
  • returning on the anticlockwise carriageway to junction 28  

• 26 September 2024

  Celebrating health and safety milestone

  The project team has celebrated a health and safety milestone: 650,000 hours without any reportable or Lost Time Incidents (LTI).

  This fantastic achievement was made possible through the commitment of our staff and supply chain on retaining a safe environment for everyone. 

  To mark the occasion, the team held a safety stand down and invited the site team to the main compound for a presentation on the upcoming high-risk activities planned as they work towards completion. They finished the day with a tasty barbecue to recognise the achievement. 

  National Highways Project Manager Zachary Pepper said: “It is a great achievement for the project to reach this milestone, which marks the significance of health and safety on site. 

  “The work completed by the integrated project team, including the construction team, suppliers and subcontractors, embeds the focus on the Home Safe and Well promise.”

  GRAHAM Project Manager Hugh McNally said: “Significant progress has been made on the project over the last two years and this achievement is a direct result of everyone’s commitment to safety on the scheme. We now refocus to ensure we continue to deliver the project safely and successfully to completion in summer 2025.”

  

   

• 19 September 2024

  Upcoming traffic management

  A12 eastbound and M25 anticlockwise entry slip overnight closure - 21 September

  We'll close the A12 eastbound from Gallows Corner to the M25 Junction 28 overnight on Saturday 21 September from 10pm-5am.

  This is so our team can safely move and install temporary safety barriers.

  During the closure, the M25 junction 28 anticlockwise entry slip will also be closed. 

  We'll maintain local access for residents with properties on the A12.

  However,  there'll be no access for through traffic during this closure.  

  Diversion Routes

  To join the M25 anticlockwise from Gallows Corner

  Use the A127 eastbound to join the anticlockwise carriageway at M25 junction 29.

  You can also use this diversion to join the A12 eastbound by leaving the anticlockwise carriageway at junction 28.

  To join the M25 anticlockwise carriageway from the A12 westbound

  Join the M25 junction 28 clockwise and do a U-turn at junction 29. 

  Non motorway traffic heading to the A12 eastbound from Gallows Corner should follow our signed diversion route by:

  • the A127
  • Squirrels Heath Road
  • Shepherds Hill
  • Nags Head Lane. 

  Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network

• 30 August 2024

  Clockwise exit slip road closures

  We are closing one slip road from junction 28 over the following weekends:

  • Friday 6 September 11pm to Monday 9 September 5am
  • Friday 13 September 11pm to Monday 16 September 5am

  When we close the clockwise exit slip road, it means you can still travel through the junction itself.

  However, if your journey involves leaving the M25 at junction 28, you won’t be able to do so.

  Please note that the M25 remains open despite the exit slip being closed.

  During the closure, to reach the M25 junction 28 interchange from the M25 clockwise:

  • continue on the M25 clockwise
  • exit at junction 29
  • return by the M25 anticlockwise to junction 28

  Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

• 11 July 2024

  Removing existing overhead gantries

  We were unable to safely remove the existing overhead gantries on the M25 as originally planned during our closure of the M25 at junction 28 in June.

  Fortunately we still used the time to complete a lot of other work while the road was closed.

  We will now remove the gantry during a full overnight closure (10pm to 7am) of the M25 clockwise between junctions 27 and 28 in late July.

  Please remember that closure details can change at short notice. For the most up-to-date information, please visit our daily closures page. 

  Clockwise diversion

  A diversion will be in place via M11, A406, and A12, where you can re-join the M25 at junction 28.

  Anti clockwise diversion

  A diversion will be in place via the A12, A406 and M11, where you can re-join the M25 at junction 27.

   

• 28 June 2024

  A12 lane closures

  Works on site are progressing well, and we're ready to divert a sewer on the A12 between Maylands Golf Club and Maylands Way.

  For safety, there will be lane closures on the A12 and no direct access from the A12 to Maylands Way from July to September.

  Closures can change at short notice.  Make sure you check the latest information on our daily closures page. 

  Closure locations

  • A12 eastbound from Woodstock Avenue to our site compound
  • A12 westbound from the A12 entry slip to Maylands Way

  Maylands way

  There will be no direct access into Maylands Way from the A12. A signed diversion will be in place and pedestrian access will be maintained. 

• 12 March 2024

  Scheme celebrates 400,000 safe working hours

  We recently celebrated 400,000 hours worked on the scheme without a Lost Time Incident (LTI).

  LTI is a standard measure within the construction industry, and relates to accidents that requires a person to take time off work.

  We caught up with project manager Zach to find out more: “This is a fantastic achievement, and testament to the continual focus we and our construction partners put on creating a safe environment for everyone who works on or visits our site.”

  “The majority of our work is within a busy and complex site; and we’re continuously reviewing and improving safety to reduce any risks and ensure everyone goes home safe each and every day.”

• 23 January 2024

  What’s coming up on the scheme this year

  As we start a key year of construction on the project, we thought we’d take a look at what work we’ll be carrying out over the next couple of months.

  The winter weather faced so far this year has not dampened progress being made across the scheme.

  We’re currently building the RECo walls, concrete earth retaining walls that were manufactured to allow a more space efficient way to build, which will form the new A12 eastbound exit slip and take traffic over the Maylands Bridge to cross the loop road, M25 anticlockwise and A12 eastbound up to the junction.

  Work will start soon on the M25 clockwise between junctions 27 and 28, with the installation of the concrete foundations for the new overhead gantry.

  We will be continuing with our work to shape the landscape for the construction of the new two-lane loop road that will link the M25 to the A12.

  Additionally, we are looking forward to our final bridge beam lift on the scheme for the new Duckwood Bridge in February. Ahead of the lift, we’ll be finishing off work on the concrete abutments – the foundations the beams will sit on.

  We’ll be posting the latest information here as work progresses.

• 20 December 2023

  ‘Beam me up’

  We’re beaming with pride as last week saw us successfully complete our last beam lift of the year, and our third on the scheme.

  Sixteen pre-cast concrete beams were lifted into place for the new Alderwood Bridge. Measuring 23.5 metres and weighing 35 tonnes each (that’s around the same as 117 reindeers!), the beams were lifted onto the newly built concrete supports.

  Located close to the M25, Alderwood Bridge is one of four new bridges, and once complete it will carry the new loop road between the M25 and A12 over the new M25 entry slip.

  This lift follows closely on from nine pairs of steel beams, weighing up to 56 tonnes (that’s more than 187 reindeers!) and measuring 48 metres in length being lifted into place to form the base of the new Maylands Bridge.

  Maylands Bridge will form part of the new A12 eastbound exit slip and will take traffic over the new Grove Bridge and loop road that are currently under construction.

  And as good things come in threes, we also recently installed six 70-metre beams that form the base of the new Grove Bridge. Due to overhead power cables, these beams were lifted into place using two specialist mobile cranes, known as modular transporters.

  With all the action happening within our site between the A12 and the M25, here’s our trio of bridge lifts condensed into just over three minutes.

  These lifts round off 2023 as we work to improve this busy junction. We’ve made fantastic progress across the entire scheme, and you may have noticed lots of changes above ground, with piling machines, beam lifts, culverts installed, and the landscape being reshaped within our site between the M25 and A12.

  There has also been a lot happening below ground, with our tunnel boring machine Tina helping divert a gas main, other service pipes and cables being moved, and protection installed over a fuel line.

  From the entire team we would like to wish you a fantastic festive break and a happy 2024.

• 08 November 2023

  Scheme achieves two big milestones

  The first saw six 70-metre beams moved into place within our site between the M25 and A12 for the Grove Bridge – as our first lift, this is a significant milestone for the scheme. These beams form the base of the Grove Bridge road deck, which will carry the new loop road underneath the Maylands Bridge – the new A12 eastbound exit that is currently being constructed.

  The beams were lifted into place in pairs using two specialist mobile cranes, known as modular transporters, due to overhead cables.

  

  With a crane positioned on the M25-anticlockwise carriageway over two nights, we also moved eight large concrete blocks into place. These pre-made rectangular sections will form the new Weald Brook culvert, which will help divert the brook so we can widen the M25 entry slip road. And the good news – this lift was completed ahead of schedule, and we were able to reopen the M25 for traffic early on Sunday morning.

  Scheme rated as excellent

  Our project has once again achieved top marks and rated ‘excellent’ by the Considerate Constructors Scheme (CCS).

  CCS is an independent organisation that aims to raise standards within the construction industry by promoting and supporting construction schemes in their efforts to care for the environment, local community, and their workforce.

  Following our most recent visit by the independent assessor, the project gained top marks in all three categories – Respect the Community, Care for the Environment and Value the Workforce – and once again scored a maximum score of 45/45.

  The assessor praised the project for: “…continuing to conform to the CCS Code of Considerate Practice to an excellent standard. Community communication and support arrangements remain very comprehensive and appearance standards are very high. It is great to see the progress in the site's social value plans and the wide range of community support and engagement activities that have been undertaken to date.”

  Project manager Zach said: “I’m delighted that we’ve once again achieved top scores across the board from the Considerate Constructor Scheme. And having just achieved our first bridge lift – a significant milestone for the project – it’s great recognition of all the hard work that everyone is putting in to deliver this project safely, with consideration to those around us, road users and the environment.”