The council is scheduled to begin essential maintenance on Inghey Bridge, on the A59 about one mile west of Skipton, on 1 October.
Essential re-waterproofing and resurfacing work will be carried out. The work is expected to take six weeks, during which two-way traffic lights will operate on the A59. The A6069 Broughton Road junction will be closed during the work and a diversion will be in place.
County Councillor Don Mackenzie, Executive Member for Highways, said: “This resurfacing is part of our continuing highways maintenance programme across North Yorkshire. It will safeguard the bridge, benefiting all users in future. We apologise for any inconvenience caused by this work. This will be kept to a minimum and we appreciate people’s co-operation in ensuring the work can be carried out efficiently and safely.”