The scheme will provide an extra lane in each direction within the existing highway boundary between Junction 7 (A43N) and Junction 9 (A509) of the A14 Kettering Bypass. Overall project cost is £42m.
The joint venture, bmJV, has been awarded the contract on a design and build basis. Main construction should start in the autumn.
Highways Agency project manager Mike Hall said: “Once completed in 2015, the project will relieve congestion on this major transport route. It will also improve journey time reliability and safety. Over the next few months we will be working with the contractor to finalise detailed design of the scheme and the construction programme.”
Morgan Sindall highways director Gary Crisp said: "We are delighted to have been awarded this project to upgrade the A14 between Junctions 7 and 9. The bmJV team is already successfully delivering a managed motorway project on the M62 for the Highways Agency. We look forward to continuing to work together to improve journey times for the travelling public.”