Scheduled maintenance works at the A46 Riseholme Roundabout, which will include surfacing and road lining, will start on Monday 23 August.
The works are expected to last for three evenings, subject to weather, and will be carried out under night-time road closures on the A46 (between Carholme Roundabout and Nettleham Roundabout) and temporary traffic signals on the A15 and Riseholme Road from 10pm to 6am.
The diversion route for the overnight closures will be via Saxilby Road / The Avenue / B1273 / Yarborough Crescent / Riseholme Road-Longdales Road / Nettleham Road, and vice versa.
Diversion route A46 Riseholme roundaboutCllr Richard Davies, executive member for highways, said: "Our improvements to Riseholme Roundabout have made a real difference to people's journey times thanks to extra capacity at all of the roundabout's entrances and exits.
"However, since opening last autumn, we've noticed a few small sections of road that haven't lived up to the standards we expect.
"Quality issues like these aren't uncommon, as it sometimes takes several months for a defect to form, so, as part of our contract with them, Breheny will be carrying out some minor repairs to ensure a long, serviceable life for the roundabout.
"We'll be doing everything we can to keep disruption to a minimum, including carrying the works out overnight when there are far fewer vehicles on the road and maintaining access for residents when it's safe to do so."
For the latest news on this and other major highways projects, visit www.lincolnshire.gov.uk/majorprojects.