Making improvements to the A320 in Runnymede between Chertsey and Ottershaw

Surrey County Council has been awarded £41.8 million by Homes England's Housing Infrastructure Fund to improve the A320.

The works will ensure there is extra capacity on the busy stretch of road between Chertsey and Ottershaw to support delivery of the Runnymede 2030 local plan.

The works will make sure all the junctions and roads work well together to improve traffic flow. There will also be improvements for walkers and cyclists, including new crossing points and wider foot and cycle paths, and improved access to public transport.

What's planned?

• Improvements to traffic lane facilities and full signalisation of St Peters Roundabout
• Provision of an additional, third traffic lane eastbound on St Peters Way East
• Provision of a new and improved Ottershaw roundabout with greater circulatory capacity with widened approaches and exits providing additional traffic lanes
• Improvements to the M25 junction 11 interchange, including full circulatory signalisation and widened northbound and southbound exit slip roads with new dedicated left turn lanes
• Provision of a new roundabout at the Holloway Hill/ Green Lane junction, with flood reduction initiatives, including the construction of attenuation ponds and shallow swales
• Provision of shared use footway/cycleways where possible
• Improvements to Guildford Road, near Salesian School, include installation of a dedicated drop-off layby / bus bays on the east side of Guildford Road along the front of the school
• Improved lighting for all road users and provision of safe crossing facilities for pedestrians and cyclists throughout the whole scheme

Construction

A programme for construction of the A320 improvements is currently being developed with our contractor, John Graham Construction Ltd. Once finalised the details will be available to view on the contractor's website. The programme will be continuously reviewed and is subject to change throughout the course of the works.

As the project progresses, additional details concerning location and type of works, both immediate and longer-term, will be uploaded. Additional details will be sent to those residents and businesses particularly impacted by the works, in advance of each phase.

Scheme updates

Works to improve the busy stretch of road between Ottershaw and Chertsey began earlier this year, with works undertaken on St Peter’s Way and outside Salesian School.

Following a review of the scheme’s costs and available funding, it became clear that increasing construction costs means we’re unable to deliver all of the improvements without exceeding the approved budget. Funding for the scheme was awarded in November 2020 by Homes England, which pre-dates several significant issues that have impacted the cost of all construction projects, including pandemic-related supply chain disruptions and rising material costs as a result of global conflicts.

As a result of these pressures, we will no longer be constructing three elements of the scheme that were outlined in the original proposal. These are:

• St Anne's roundabout
• Little Green Lane to St Peter's hospital roundabout
• St Peter's roundabout to Ottershaw roundabout

These changes have been agreed with Homes England, which supports the revised scope. The remaining six elements of the scheme are expected to be constructed as planned, ensuring we deliver improvements that provide the greatest benefit for local communities and road users. These elements are:

• St Peter’s Way roundabout
• Holloway Hill / Green Lane junction
• Ottershaw roundabout
• M25 junction 11
• St Peter’s Way east
• Guildford Road (outside Salesian School)