West Lindsey District Council, Lincolnshire County Council and North Lincolnshire Council have started a study looking at the possibility of dualling the A15 between Lincoln and Scunthorpe.
The study, costing £40,000, will look at the potential economic benefits of a dual carriageway on various sections of the road.
The study will also look at potential road safety improvements, and explore the possibilities for new housing.
The project, estimated to cost £500m, is still in the early stages.
The study is due to be complete by June this year.
Speaking to the Mail back in November, WLDC leader Jeff Summers said a dual carriageway would reduce accidents and ‘improve connectivity’ for people in Market Rasen and surrounding villages.
He said: “Having a dual carriageway is undoubtedly going to improve connectivity for places like Market Rasen and Gainsborough.
“One of the important things is, in my mind, it will reduce the number of accidents that occur. I’m convinced it’ll be a lot safer.”