A one way system on the A472 in Ystrad Mynach, outside the New Cottage Dance Centre, will be reintroduced next week to allow eastbound traffic only, as previously used.
The council has said this is needed to allow the full road construction immediately west of the Rhymney River bridge and to complete the road widening in the area.
The one way system will start on Monday September 19 for a period of five weeks.