Motorists are advised to plan ahead before they travel as major road works and a full road closure will begin on the A470 between Talerddig and Dolfach on 20 January and end on 11 April. This follows a pause on the works due to the rail collision on the Cambrian railway line in October.
Following the full closure period, 2-way traffic lights will be reinstalled at the site whilst construction is completed. All traffic management will be removed from the site by 30th April 2025. The duration of the works has been extended to allow for a water main diversion. However, every effort will be made to reduce this timeframe if possible.
The work will provide a permanent solution on this stretch of road which has had traffic management in place since an emergency closure in October 2023, when a retaining wall which supported the road partially collapsed.
A section of the diversion route, the A458 at Nant y Dugoed, has traffic signals in place following a wall collapse, but this is not expected to add significantly to journey times. Work to stabilise the wall will be carried out at the earliest opportunity once the work in Talerddig is complete.
The works will improve the resilience of the A470 and ensure an emergency closure, and the disruption that it brings, is less likely to happen.
Repairs to the retaining wall above the adjacent Afon Laen will mean the stretch of road will be closed 24hrs per day throughout this period, however roads engineers are working to reduce the duration of the work as far as possible.
This work is essential in order to ensure the road can remain open in the years to come. We understand this will cause disruption in the short term while the work is under way, and we thank drivers for their patience. It is vital this work is carried out at this time for the future resilience of the road.