A77 traffic works due to repair of subsidence or landslide since 2000: EIR release

Information requested

How many days has the A77 between Fenwick to Stair Drive in Stranraer been reduced to 1 lane with control of direction being under the control of a traffic light system, at places that subsidence or landslide is either being monitored or is the cause. In addition to that can the places be named and for how long? The time period being since 2000.