M25 bridge installed ahead of schedule
The M25 has reopened earlier than planned following the installation of a new bridge as part of the ongoing £317 million upgrade at Junction 10. The closure, which lasted from 21.00 on Friday 12 July, was lifted seven hours ahead of schedule at 22.45, instead of the planned reopening at 06.00 the following Monday.
The work focused on the construction and installation of a bridge on the western side of the roundabout at Junction 10, part of the third full weekend closure associated with the project. National Highways' contractors, Balfour Beatty and AtkinsRéalis, successfully completed the placement of 72 beams, ranging in weight from 16 to 42 tonnes, along with a superspan gantry stretching 45 metres across the M25. The early reopening marks the third time the motorway has reopened ahead of schedule during these works, which are set to be completed by summer 2025.
This junction upgrade is a crucial component of the UK Government’s £24bn Road Investment Strategy (RIS2). Located near Guildford in Surrey, the project aims to ease congestion, improve traffic flow, and enhance road safety. National Highways reports that over 300,000 vehicles travel through the junction each day, making it one of the busiest stretches on the M25. Currently, vehicles queue frequently on both the roundabout and approach roads.
The bridge installation forms part of broader efforts to improve the junction's layout. Upon completion, the scheme will increase the number of lanes and introduce free-flow left turns at all four corners of the interchange. The work is also aimed at improving local connectivity, particularly for cyclists, pedestrians, and horse-riders. New bridges will connect surrounding areas for the first time, and environmental upgrades include heathland restoration and tree planting.
This project is not limited to road improvements. A new heathland bridge, known as Cockrow Green Bridge, will be built to allow local wildlife to safely cross between Ockham and Wisley Commons. In addition, the A3 will be resurfaced with low-noise materials, and environmental barriers along the M25 will be replaced to minimise the effects on air quality.
Project leaders are pleased with the progress so far. Jonathan Wade of National Highways credited the project team for their efficient work, which allowed the M25 to reopen earlier than expected, reducing disruption for road users. Balfour Beatty project director Howard Williams echoed this, praising both the team and the public for their cooperation.
With two more full weekend closures scheduled before the project's completion, National Highways is expected to confirm further details in the coming months. Meanwhile, drivers are encouraged to stay informed about future closures and diversions as the works continue.
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