A466 Wye Valley - Bank Stabilisation Work


Following the winter storms in February 2020 a shallow landslide appeared just north of Bigsweir Bridge on the southbound side of the A466 carriageway. To ensure the safety of the public we removed the slipped material, and installed traffic lights with concrete barriers to provide temporary protection to the carriageway.

Highways engineers have monitored the site whilst the temporary protection has been in place.

31 March 2021 - A466 Wye Valley reopens after repairs

The work has been carried out more quickly than anticipated and the road is now fully reopen for two way traffic. Read more here 


Road closure - 1 March to 9 April 2021

The scheme will start with vegetation clearance around the failure. Then we will be stabilising the embankment using a grid pattern of metal bars into the slope covered by a high grade steel mesh. The machinery to install these metal bars will need space that covers more than one lane of the road; therefore it is not possible to keep the road open during these works.

This means the road closure will be in place 24/7 - this is for the safety of the road users and our workforce. 

There will be no access for through traffic between Redbrook and St Arvans, however a diversion route suitable for all types of vehicles will be clearly signed. Local access on either side of the road closure will be maintained.


Why are works needed?

The initial site survey has assessed that the area of the landslide is not stable to leave as is and would be a risk to road users, which is why the temporary barriers and traffic lights have been installed. Therefore, a remedial solution to stabilise the slope and make this section of road safe is required. The works are planned to be completed by 9 April 2021, allowing all traffic management to be removed in this area.


Frequently asked questions


A landslide occurred following a winter storm, temporary traffic management is currently in place. A permanent slope stabilisation solution has been designed and will be constructed from 1 March 2021.

A site survey occurred soon after the landslide; this indicated that there was the risk of further failures so traffic lights and concrete barriers were installed to protect road users. A detailed design has been completed and will be installed during the works starting on 1 March.

There were a significant number of storms last winter meaning multiple sites needed to be mitigated across the county. To design and install suitable remedial measures the site conditions needed to be fully understood. As it was possible to keep the road open with traffic management this was not seen as essential work during the first Covid-19 lockdown.

Once the lockdown eased, we were able to undertake a more detailed site survey and continue with the design. As the area is within a conservation site there are particular ecological and environmental permits and processes that need to be completed and adhered to before site works can commence.

The carriageway will be closed for vehicles, cyclists and pedestrians for everyone's safety. However Public Rights of Way in the area will remain open.

For safety reasons the road is closed to all traffic. The buses and school buses will be using the diversion route.

The design and construction works are estimated to cost around £150,000. Gloucestershire County Council’s highways maintenance contractor, Ringway will be undertaking the work as the Principal Contractor, Atkins will be providing design support.

Check this webpage for regular updates on this scheme or email us at highways@gloucestershire.gov.uk.​


Photos - week 2 

Works are progressing well and on schedule. 



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