M25 junction 28 improvements
Upgrading junction 28 of the M25 between the M25 and the A12 in Essex.
We have identified a number of issues at the junction which are impacting on the local and regional economies and their ability to achieve their full potential. These include:
- congestion and delay disrupting journeys on our road network and local roads
- actual and significant perceived safety concerns connected to driver movements on the roundabout
- resilience to incidents is poor, resulting in significant disruption and unreliable journey times
- poor air quality
We reviewed this junction in our London Orbital and M23 to Gatwick Route Strategy Evidence Report, and this scheme was included in the March 2015 Road Investment Strategy. In response to this we developed our Delivery Plan which outlines the next steps for taking the scheme forward.
Our research shows that if we don’t improve junction 28 by 2037, we can expect:
- increased congestion and lengthy queues, at least 5 times worse than at present
- a 25% reduction in average speeds through the junction (excluding mainline M25 and A12)
- widespread disruption following incidents
- constraints on future development and growth opportunities
- local air quality issues to deteriorate
We’ve established a number of scheme objectives to address the challenges:
- increase capacity and reduce congestion and delays by providing an improved link from M25 to A12
- reduce the incident rate and resulting disruption by increasing the capacity of the roundabout
- improve the safety on the roundabout by reducing traffic levels and redesigning the existing layout
- cater for future traffic demands to enable development and economic growth
- minimise the impact on local air quality and noise by smoothing the traffic flow
- protect access for non-motorised users (pedestrians and cyclists) and improve conditions wherever possible
As a result of ongoing engagement and further development of the M25 junction 28 scheme, we are looking to make some changes to our submitted Development Consent Order (DCO) application.
We held three non-statutory targeted consultations around these changes and details about these are outlined below.
For each consultation, we targeted the following groups:
- affected prescribed bodies, as defined by the Planning Act 2008
- landowners and people with an interest in affected land
- Interested Parties registered with the Planning Inspectorate, where we held contact details.
A consultation took place from 4 January to 4 February 2021 for changes 1-4. Details of each change is outlined below.
Change 1 – Removal of surplus construction materials deposit to the west of Weald Brook (Work No. 17)
In our DCO application, we proposed two construction material deposit areas – Work No. 17 and Work No. 18. During construction, material deposit areas are used to rehouse materials, for example excess soil, that needs to be moved to allow us to build the proposed improvements.
Following discussions with the Environment Agency, we are looking at not using the area to the west of Weald Brook for the deposit of materials, and instead create an earth embankment, also known as a bund. More details about this embankment can be found in Change 2.
The material from the historic Brook Street landfill and from our work in the Grove Farm area will be re-used on site for the new A12 slip road.
Change 2 – Amendment to the surplus construction materials deposit (Work No. 18) to form an environmental bund
As outlined in Change 1, we are proposing to use some of the materials removed during construction to create an earth embankment (Work No. 18), known as a bund, rather than using the deposit area which was proposed under Work No. 17 in our DCO application.
The embankment would be up to 2.5 m high, with slopped sides. Running alongside the A12 and the loop road, it forms a reverse L-shape. Woodland planting would cover the south and east sides. On the western edge, there will be a flat grassed area to allow vehicle access for any future maintenance. This area is known as a berm.
The embankment provides visual benefits as well as some very limited noise screening to the residents at Maylands Cottages and users of Maylands Golf Course.
Change 3 – Refinement of golf course accommodation works (Work No. 32)
We will need to complete some work on the Maylands Golf Course to provide us with the space to make improvements to the junction. These works are known as Work No. 32 in our DCO.
Following discussions with the golf club, we are proposing a new boardwalk, which will provide a safe route for players to walk back from the green of the realigned second hole to the third tee while minimising any interruption to play.
Change 4 – Amendment to the lateral limits of deviation for the Cadent gas pipeline diversion – southern connection (Work No. 29)
Since our DCO application was accepted by the Planning Inspectorate, we have been working with Cadent to develop a detailed design of the pipeline diversion.
In our proposals, we identified Plot 1/8 for the southern parts of the pipeline diversion. We are now proposing to reduce the extent of land required to construct and then maintain the diverted pipeline in this area.
A consultation for our next set of changes, Changes 5-7, took place between 23 March to 22 April 2021.
A copy of the letter outlining these changes can be viewed on the Planning Inspectorate website.
Change 5 – Reduction to the realignment of the Weald Brook (Work No. 23C)
We need to build a bridge to carry the new M25 loop road over the Weald Brook, Duck Wood bridge. In our application, this bridge had a central support that would require a stretch of the brook to be realigned – shown as Work No. 23C.
Having further developed the design of the bridge, we are proposing to remove the central support. This means we are able to reduce the amount of the Weald Brook that needs to be straightened from 70m to 40m.
Change 6 – Realignment of UK Power Network (UKPN) diversion (Work No. 30)
We are proposing a new route for the UK Power Networks (UKPN) cable diversion. The cable would be below the ground and run closer to the M25. Starting at the UKPN’s substation on the M25 northbound on-slip near the Brook Street roundabout, the diversion runs to the existing underground cable adjacent to the Weald Brook culvert to the west of the M25.
The underground cable requires a three-metre-wide corridor of clear land running the length of route, this is known as an easement.
Change 7 – Refinement of Maylands golf course accommodation works (Work No. 32)
Following on from Change 3 above, we have been working with Maylands Golf Club on the design for relocating the second hole on the course, and other related works. If Change 7 is accepted by the Planning Inspector, we will no longer need Change 3 and we will only progress with this change.
Following completion of consultation on Changes 5-7 we submitted a request to the Planning Inspectorate to consider these changes on 27 April.
Change 8 – Grove Farm egress – revisions to Work No. 15
This consultation is taking place from 20 April – 18 May 2021
Following feedback from Grove Farm, we are looking at relocating the proposed exit road from the farm onto the A12 away from the property, known as Work No. 15.
This should remove the risk of lorries leaving the farm passing directly outside the property to approach the new A12 eastbound. Following completion of the consultation exercise we will consider whether to then make a request to the Planning Inspectorate to consider this change.
Scheme context plan
Preliminary Environmental Information Report non-technical summary
Preliminary Environmental Information Report Volume 1
Preliminary Environmental Information Report Volume 2
Preliminary Environmental Information Report Volume 3 Chapters 1-2
Preliminary Environmental Information Report Volume 3 Chapters 2-6
Preliminary Environmental Information Report Volume 3 Chapters 7-10
Preliminary Environmental Information Report Volume 3 Chapters 11-15
Section 47 Statutory Notice
Section 48 Statutory Notice
Development Consent Order Leaflet
Scheme Assessment Report
Statement of Community Consultation
Data Protection and You – GDPR Banner
Technical Appraisal Report
Technical Appraisal Report - Appendices A & B
Technical Appraisal Report - Appendix C
Technical Appraisal Report - Appendix D
Technical Appraisal Report - Appendix E
Technical Appraisal Report - Appendix F
Technical Appraisal Report - Appendix G
Technical Appraisal Report - Appendix H
Technical Appraisal Report - Appendix I
Technical Appraisal Report - Appendix J
Technical Appraisal Report - Appendix K