The contract for a project to widen a 2.8 mile stretch of the A14 near Kettering has been awarded to a Surrey-based construction firm.
The £42 million scheme will make journey times more reliable, improve safety and enable the future development of East Kettering to proceed, according to the Highways Agency.
A firm called bmJV, which is a joint venture between construction firms BAM Nuttall and Morgan Sindall, was last week awarded a £24 million “design and build” portion of the contract.
They are expected to start work in the autumn. The improvement will mean an extra lane added to the A14 in both directions between junctions 7 (A43) and 9 (A509).
Mike Hall, Highways Agency project manager, said: “Once completed in 2015, the project will relieve congestion on this major transport route.
“Over the next few months we will be working with the contractor to finalise detailed design of the scheme and the construction programme.”
Kettering councillor Michael Brown said the A14 work was essential to help the town with its future growth.
He added: “The council, alongside MP Philip Hollobone, lobbied to win this money for the A14 improvements as we have always felt it is essential. Kettering is undergoing record growth and this is about future-proofing the town.”