Northern Ireland construction firm GRAHAM has provided a positive update on one of its key highway projects, the M25 junction 28 improvement scheme in Essex.

The project, for National Highways, is steadily progressing towards completion in late summer 2025, with significant milestones achieved early this year.

A number of achievements have been made thus far, including the opening of the new M25 anticlockwise entry slip in January 2025. The newly constructed, longer entry slip from the Brook Street roundabout to the M25 anticlockwise carriageway is now operational and provides increased visibility, allowing merging traffic to reach National Speed Limit over a greater distance thus improving safety and traffic flow.

Additionally, the A12 eastbound off slip opened in March 2025. This opening of the new 800-metre-long off slip from the A12 eastbound to the Brook Street roundabout allows GRAHAM to demolish the old A12 off slip and build the new loop road from the M25 anticlockwise to the A12 eastbound.


Furthermore, as part of the improvement scheme, GRAHAM is upgrading the existing NMU footpath between Harold Wood and Brentwood. These upgrades include widening the path along the A12, including the corner of Maylands Way. The first section of the NMU route at the entrance to Maylands Way is nearing completion, with kerbing and initial tarmac layers laid. Final surfacing is scheduled for the coming weeks.

The project team is now focused on completing the remaining key components of the scheme:

• Construction and opening of the new M25 anticlockwise to A12 eastbound dedicated loop: This new loop is designed to significantly improve traffic flow between the M25 and A12 eastbound.

• Completion and opening of the improved NMU route: The enhanced pedestrian and cyclist route will provide safer and more efficient connectivity.

• Complete resurfacing and white lining of the Brook Street roundabout: This work will improve the surface quality, traffic signals and lane markings, enhancing safety and traffic flow.

• Opening of the new A12 eastbound off slip to the Brook Street roundabout: This will increase capacity and reduce congestion.

The scheme is on track to deliver a more efficient and safer transportation network for all road users, highlighting GRAHAM's expertise in delivering major infrastructure projects.