A full weekend road closure on the A465 Section 2 between Gilwern and Brynmawr is scheduled to start at 8pm on Friday, October 23 and last until 6am on Monday, October 26

The closure will enable a number of construction activities to take place, but critically is required to install a bat crossing underneath the carriageway and undertake rock blasting trials on some of the cutting slopes within the Clydach Gorge.

The recommended diversion from both ends of the closure can be seen above.

“During the course of the closures full access will be maintained through the site for emergency services vehicles which will be escorted by our traffic management team. Also we intend to maintain controlled access across the closure at the Saleyard and Gilwern junctions,” said a spokesman for Costain.