The route and plans for the proposed Weedon and Flore bypass will be exhibited at two events this month.
Residents will be able to have their say on the plans, which were altered in January when the new road’s junction with the A45 between Weedon and Dodford was moved.
The consultation events will take place on Thursday, April 24 from 12.30pm to 8pm in Weedon Village Hall annexe, and on Tuesday, April 29 from 2pm to 8pm in Flore Millennium Hall.
A spokesman for Northamptonshire County Council said: “People are welcome to come along to the exhibitions where large-scale plans of the route will be on display. Northamptonshire Highways staff will also be on hand to discuss the changes, and the next steps in delivering the scheme.
“A preferred route for the new road, to the north of Weedon, Flore and Upper Heyford, was agreed by Cabinet in January 2013 after this was shown to be the favoured route during public consultation.
“Engineers have been working to refine the alignment of the preferred route and this has resulted in some changes being made.”
The long-awaited road has been on the cards for decades due to the amount of traffic passing through Flore and, more recently, Weedon on the A45. The road has become even more important in recent years after a planning inspector said Daventry’s expansion, needed to support more facilities, would be limited until the capacity of the A45 to the M1 was increased.
Stuart Jacks, chairman of Weedon Bec Parish Council, said: “This shows signs the road is progressing and it’s a positive step.
“The exit onto the A45 near Weedon is a bit of a concern and might not be in the best interests of traffic coming into the village.
“I’m looking forward to the exhibition and I know a lot of the residents of the village are considering going along, so hopefully it will be as productive as the last consultation on the bypass held in Weedon.”