"It's the critical link between Wellington's CBD, the airport and surrounding suburbs," he said.
Leighton has provided similar maintenance services across Auckland's CBD and inner western suburbs as a key member of the Auckland Road Maintenance Alliance.
In Wellington, the company was part of the team responsible for the successful refurbishment of the Mt Victoria and Terrace tunnels and is currently undertaking their maintenance.
Leighton has also been involved in construction of a number of big roads in Auckland, including the Northern Gateway Toll Road, State Highway 20 Manukau Motorway Extension and the Newmarket Viaduct replacement project.
"Our operations in New Zealand have grown steadily over the past 10 years. We now have an on-the-ground workforce of more than 700 people across our infrastructure, mining, services and telecommunication operations," Stevens said.
Leighton is working on ultrafast broadband in Auckland with Chorus, and development, management and operation of the Favona underground gold mine in the Coromandel.
It is also in a consortium shortlisted for the Transmission Gully road project north of Wellington. The project involves financing, designing, building, maintaining and operating the planned link between Linden and MacKays Crossing for up to 25 years.