The upgrade project includes the creation of four traffic lanes in each direction of the M3 as well as the provision of a same direction free-flow link between the M3 and A34.
Also VolkerFitzpatrick will be constructing three new bridges, rearranging the main junction 9 roundabout and providing a number of other structures including new underpasses.
VolkerFitzpatrick is taking steps to minimise its environmental impact by reusing existing sub-base from the project.
The business will be working with supply chain contractors from the surrounding area, providing employment opportunities over the course of the project and placing apprentices and trainees on site.
Deon Scholtz, highways director for VolkerFitzpatrick, said: “We are delighted to have been appointed to deliver the M3, junction 9 upgrade project, continuing our collaboration with National Highways.
“The regional approach will allow us to deliver our in-house highways expertise in a way which most benefits the communities in which we work.”
The M3, junction 9 upgrade project is part of National Highways’ £8.7 billion Regional Delivery Partnership, which has seen the VolkerFitzpatrick team deliver works to improve roads and infrastructure in the South East.
The project is due to start on site in early 2025.