The Forrestfield Airport Link is a light metro line connecting the eastern suburbs of Perth with the existing suburban rail network as well as the airport. Twin tunnels 8 kilometres long and three stations were constructed for the project.

Whittens provided project management and concrete resources for the installation of in-situ track slabs, tunnel approach slabs, and station rail slabs.

The works required precise planning and coordination to meet strict construction tolerances. Through value engineering, Whittens proposed replacing a rail-mounted agitator with a high-pressure concrete pump capable of reaching 1.5km, which significantly improved productivity, speed and cost efficiency.​