The repairs to the embankments on the A77 at Carlock Hill and north of Marchburn will continue on Monday 25 May for one week.
These repairs are scheduled to take place overnight from Monday 25 until Friday 29 May between 10pm and 6am under a total closure of the A77 between Girvan and Cairnryan.
A diversion will be in place during the overnight closures. A77 traffic travelling northbound will be diverted south from Cairnryan, then east via the A751 to the A75 to Newton Stewart, then northbound on the A714 to re-join the A77 at Girvan.
Southbound traffic will follow the same direction in reverse.
Upon completion of this phase of works the temporary traffic lights currently in operation at these two locations will be removed.
Gordon Wilson, contract director, Scotland TranServ said: “It is vital that we carry out these works to ensure the route is safe to reopen to the local community and the over 3,000 motorists who travel through this area each day.
“Safety is of the utmost importance and we will continue to do everything we can to reduce the risk of further landslips in these locations and improve the long term resilience of the A77.
“This is the first phase of works on the A77 to improve the resilience to landslips between Ballantrae and Cairnryan and will assist in ensuring the safety of the travelling public and maintaining access along this important commuter and business route.”
He added that Scotland TranServ is also currently working with Transport Scotland on a long term strategy to reduce the risk of landslips across the south west trunk road network.