ESSENTIAL maintenance on the A78 at Wemyss Bay will mean overnight closures and day-time traffic lights for a week.
Work will take place between The Lighthouses and Kelly Burn from 9pm to 6am each night from Thursday (7 October) to Wednesday 13 October (inclusive).
The £180,000 scheme will improve the condition of the carriageway and reduce the need for more extensive maintenance in future.
A signed diversion route will be in place between Largs and Greenock.
Northbound traffic will be directed to leave the A78 at Haylie Brae/A760 (Largs) and continue on the A760 to Kilbirnie to join the southbound B780.
From here, vehicles will join the B777 on to the A737 at Beith and continue north to the A737 towards Johnstone and join the A761 to Clune Brae (Port Glasgow).
Traffic will then follow the A8 at Newark Roundabout and travel west to Greenock, to rejoin the A78 at Bullring Roundabout.
Southbound traffic will follow the same diversion in the opposite direction.
Wemyss Bay Caravan Park will remain open at all times throughout the works with access only restricted from the north (via Inverkip) during the overnight working hours.
Temporary traffic lights will be required daytime to facilitate cooling of the newly-laid materials.
During the overnight closures access will be maintained only for properties/businesses within the extents of the scheme, under escort. Proof of residence may be required.