Temporary traffic lights are set to slow traffic on the A77.
Essential work will be undertaken on the truck road at Altimeg, south of Auchencrosh starting on Monday, July 27.
Works include repairs to the structure where scouring has occurred including installation of rock armour and protection plinths along embankments where erosion has occurred from the Water of App.
The southbound safety barrier will also be upgraded and the project plans to protect the integrity of the trunk road and preserve the natural environment of the area.
Temporary traffic lights will be installed on Monday and will remain until August 7.
Brian Laurie, Scotland TranServ’s Network Bridges Manager said: “This stretch of the A77 trunk road is an important route connecting the Cairnryan ferry ports with Glasgow and the Central Belt.
“It is an essential link for emergency services, freight, retail and delivery traffic as they go about their vital work.
“It is important that we continue our essential works in order to maintain road safety across South West Scotland.”
Drivers are advised to carefully plan ahead and to allow some additional time for their journeys.
