M4 Junctions 12 to 13 – Bridge Refurbishment Works

Work that started in February 2017 to the two bridges which carry the M4 over Ashampstead Road and Dark Lane is now in its final stages and is to be completed in August 2017.

Following completion of this scheme, work will start to three further bridges along the M4 near Hermitage, which will involve the same activities to replace the beams along the central reserve and longitudinal and transverse joints, waterproofing material and existing safety barrier (VRS) over the bridge central reserves.

Preparation works for the next scheme is scheduled to start in mid-August 2017 and will be done using overnight lane closures and occasional full overnight M4 closures.

The main work will then start in October 2017 and is scheduled to take eight months to complete. Work will primarily be undertaken during day time hours, however some activities will be carried out at night when necessary.

Long term monitoring has found that the two bridges which carry the M4 over Ashampstead Road and Dark Lane, near Bradfield in West Berkshire, require extensive repair due to chloride-induced corrosion.  Critical repairs are required to address the defects and ensure the structures remain in a safe and serviceable condition.