Kier has won a £33M deal to dual a section of the A30 in Cornwall.
The Bedfordshire-based contractor will upgrade the 5km stretch of road between Temple and Higher Carblake.
Cornwall Council will part-fund and deliver the project, in conjunction with the Highways Agency.
Work will begin in March 2015 and the improved road is expected to be open to the public in early 2017. The A30 will then be dual carriageway all the way from the junction with the M5 at Exeter to the junction with the A39 near Truro.
Kier Infrastructure executive director Sean Jeffrey said: “It’s a strategically important scheme for the region, providing much-needed highways improvements and increased capacity, so we are delighted to have been chosen to deliver the project.
“It comes shortly after our appointment on to the Highways Agency’s Collaborative Development Framework, so we look forward to delivering many more schemes like this in the future.”
Cornwall council leader John Pollard said: “The dualling of this 5km stretch of road will play a vital role in reducing delays on the A30, which currently cost over £10M a year in lost time alone.
“It will also play an important role in the future prosperity of Cornwall by encouraging economic growth, aiding regeneration and business expansion, and supporting tourism.”