Highways England will carry out remedial works on the A303 near Amesbury after stone used in the original scheme was contaminated with low quality materials.
Resurfacing work carried out on the A303 between Countess Roundabout and Cholderton last winter, is going to be replaced.
Highways England project manager, Paul Vosper said: “We sincerely apologise to our customers for the disruption these additional works will cause, but it’s vitally important the surfacing on this busy main route is replaced quickly to ensure safe and reliable journeys for many years to come.
“Leaving the surface in place for any longer than necessary could possibly lead to further unplanned problems in the future and further disruption. That is why we have acted quickly to rectify the situation and well ahead of the school summer holidays when traffic flows increase significantly.
“We have consulted with Wiltshire Council to ensure the work is completed with the minimum of disruption. Our suppliers recognise the issues and are working at their own expense to ensure the road is repaired and will provide trouble free use for many years to come.”
Work will be completed on 18 July.