The A465 Heads of the Valley road between Brynmawr and Gilwern will be closed from 8.30pm on Friday June 9 to 6am on Monday June 12.

A crossover point for Clydach South and North will be available.

During the course of the closure full access will be maintained through the site for emergency services vehicles which will be escorted by Costain’s traffic management team.

A minibus service will replace the Stagecoach Service 3 on Saturday.