AN eight mile stretch of the A465 Heads of the Valley Road between Brynmawr and Gilwern will be closed overnight from Monday, September 11 to Thursday 14.

The closures will take place from 8.30pm to 6am over the four day period.

Builders Costain Ltd say the closures are necessary to erect temporary trestles as part of the construction of the Gateway Bridge in Brynmawr.