The A714 is set to be closed overnight for a period of six weeks starting at the end of this month.
The closure at Glendrissaig bridge is due to works ongoing in relation to the Assel Valley wind farm.
Falck Renewables manager Alasdair Macpherson has given an update to the Assel Valley wind farm liaison group within the community and the closure is believed to have been agreed by the Ayrshire Roads Alliance.
Final confirmation is still awaited but the section of the A714 is set to be closed each night from 8pm to 6am for six weeks though this could be extended due to the weather.
In a letter to members of the group Mr MacPherson says: “If we start at the end of September it should allow us to finish work before the worst of the weather begins. If this is not possible, the bad weather may delay work and could lead to an extension of the closure period.
“A diversion will be in place, which will be signposted and vehicles over 7.5T will have to follow the A77 and A75 for access back on to the A714. Arrangements will be in place to allow access for emergency vehicles at all times.
“We’re still in discussions with Stagecoach about buses.
“The Ayrshire Roads Alliance will place a statutory notice in the local paper to notify the local community of the road closure in the coming weeks.”
Falck would supplement that by also advertising in the Gazette as well as door to door leafleting in Pinmore, Pinwherry, Barrhill, Colmonell and Old Dailly with a detailed map included.
They also plan to deliver leaflets to hotels and guest houses in the area including Girvan and put up posters in Girvan and the village and notify the 2Pins website.
Mr MacPherson is hopeful the timescale of six weeks will be adhered to.