Sutton Bank on the A170 between Helmsley and Thirsk is set to undergo the most extensive maintenance programme in its recent history, according to North Yorkshire Council.
NY Highways teams will survey the entire slope, stabilise the south hairpin bend to prevent landslips and carry out essential maintenance on the rock face to prevent any falls.
Executive member for highways and transportation, Cllr Keane Duncan, said: “These major works on Sutton Bank will ensure that it remains structurally sound and hopefully reduce the need for longer closures in future.
“Our annual maintenance scheme usually takes a week, so we appreciate the added disruption that the extended timescale will cause. We ask the public for their understanding and co-operation while the work is ongoing.”
Cllr Alyson Baker, member for the Hillside and Raskelf division, said: “The A170 is a key strategic route across the county, so it is essential to make sure it is safe and fit for future traffic demands.
“The short-term disruption of this annual maintenance scheme is outweighed by the long-term benefits. We are asking road users to familiarise themselves with the official diversion route and allow extra time for journeys.”