Work to repair the historic Grade II listed North Bridge, Oundle will start on Monday, November 11.
The bridge was shut to heavy goods vehicles - by imposing a three tonne weight restriction - because of concerns about a number of its arches.
The work will take about 30 weeks to complete to repair and strengthen the bridge.
Most of the repair work will take place under the structure so the impact on motorists will be kept to a minimum.
However, the southern footway will be closed at all times to allow work to be carried out safely. Pedestrian access will be maintained on the other side of the bridge.
The works will consist of
- Vegetation clearance
- Strengthening of arches
- Removal of weight restriction over the bridge
Cllr Jason Smithers, Northamptonshire County Council cabinet member for highways and place, said: “I’m delighted that we’re now in a position to start these works which have long been anticipated.
“Because the structure is Grade II listed, these works are far more complicated than on a regular bridge.
“I’d like to thank everyone for their patience on this. We’re also keeping disruption to a minimum as much as possible while the work takes place.”
Northamptonshire Highways have been working with associated parties including East Northamptonshire Planning Authority, the Environment Agency and Historic England, to secure consent to start works on the repair.
To allow for vegetation to be cleared safely, weekend daytime closures will be required in the first few weeks of the scheme. These have not yet been programmed.
Towards the end of the 30 week programme some full 24 hour closures will be required. This is to allow the width restriction to be removed and to resurface the carriageway.
Contact Northamptonshire County Council for further information.