Alun Griffiths has won a much-anticipated contract to build an £80m bypass to ease congestion in Powys, Wales.
The 3.4-mile bypass will run south of Mochdre Industrial Estate, passing beneath the main Cambrian railway line east of Dyffryn Industrial Estate.
Atkins and TACP will provide engineering and environmental support.
Transport minister Edwina Hart said: “I am delighted to be able to award the contract for this very important project, which will improve the quality of life for the people of Newtown and improve journey times and safety along the A483 and A489.”
“It is also encouraging to see that a Welsh company has won this tender, which will help safeguard Welsh jobs and result in money staying in the local economy,” she said.
Initial design is expected by April 2014.