The man in charge of the project which will see the A14 widened around Kettering has vowed disruption caused by the work will be kept to a minimum.
Work gets under way next month between junctions seven and nine, with the project due to finish by spring 2015.
Speaking at the start of a three-day public exhibition, Mike Hall, project manager for the Highways Agency, said the widening work had been a long time in the planning and was much-needed in order to reduce congestion.
He added: “There’s going to be an amount of disruption. All we can do is keep it to a minimum, but we can’t deny it’s going to cause some disruption.”
He also said the amount of road closures would be minimised, with two lanes in each direction open during the day for most of the project, and noisy work being done in daylight hours so as not to disturb people living nearby.
The exhibition, at Kettering Conference Centre, is on again tomorrow (Friday) between 2pm to 8pm and from 10am to 4pm on Saturday. Network Rail also has an information stand there to give out details about the closure of the Pytchley Road bridge between Monday, December 9 and Friday, February 28.
Anne-Marie Batson, a Network Rail spokesman, said the electrification would bring huge benefits for rail passengers.