Works to install new traffic lights at the Corringham Road/Thorndike Way junction are to begin on Monday 7 September.
Lincolnshire County Council and West Lindsey District Council are working together on the project, which will increase safety and unlock development in the area.
The Greater Lincolnshire LEP are also involved as a funding partner.
The scheme is expected to take 12 weeks to complete, subject to suitable weather.
Cllr Clio Perraton-Williams, county councillor for Scotter Rural and executive support councillor for highways, said: "Over the years, we've made a number of improvements to this vital junction, all aimed at reducing the number of serious collisions.
"However, the local community has been calling for traffic lights or a roundabout here for some time, and I'm pleased that we can now make it happen.
"When complete, the new signals we're installing will help increase safety even further, while ensuring that the junction can cope with the extra traffic generated by any new housing in the surrounding area over the coming years."
When work starts, traffic management will include:
- Temporary traffic signals at the junction during the works
- A temporary 40mph speed limit reduction on the A631 Thorndike Way dual carriageway
- Lane closures on the A631 Thorndike Way dual carriageway
- Overnight road closures as needed towards the end of the scheme for final surfacing works (dates to be confirmed closer to the time)
Cllr Richard Davies, executive member for highways, said: "As with any other major improvement project, there will inevitably be some disruption on local roads while work is underway.
"This will be inconvenient to many, but I want to assure everyone that the long-term benefits will be well worth it in the end."
Cllr Owen Bierley, Chairman of the Prosperous Communities Committee, said: “As part of West Lindsey District Council’s commitment to the growth and regeneration of Gainsborough, we have worked with Lincolnshire County Council, Greater Lincolnshire LEP and local landowners to secure a funding package that will see the safety and efficiency of the Corringham Road / Thorndyke Way junction improved. The upgraded junction will not only be safer for road users and pedestrians but will also allow for future housing growth in this part of Gainsborough.”
Pat Doody, Chair of the Greater Lincolnshire Local Enterprise Partnership, stated: "This £512,500 investment in the junction by the LEP will enable the development of 130 new homes and will contribute to the wider regeneration and post-COVID recovery of Gainsborough town centre. The LEP is very pleased to be supporting this important scheme for the town."
The project is set to be reviewed and discussed by the county council’s Highways and Transport Scrutiny Committee on Monday 20 July.
The £1.5m scheme is being jointly funded by LCC, West Lindsey District Council and Greater Lincolnshire LEP.
For more information about this and other major highways projects, visit www.lincolnshire.gov.uk/majorprojects.