M7-M12 Integration project

Delivered by John Holland on behalf of WSO Co, a joint venture comprising Transurban Group, Canada Pension Plan Investment Board and QIC Private Capital on behalf of its managed funds and clients, the project included the delivery of the M7-M12 Interchange, the Elizabeth Drive Connection and the widening of the Westlink M7 Motorway.

Completed ahead of schedule and on budget while keeping one of Sydney's busiest motorways moving, the project is another example of the smart thinking John Holland brings to complex infrastructure challenges. 

Key benefits of the new interchange include reduced congestion and travel time, increased capacity and more reliable journeys for road users including freight. Thousands of local jobs were also created during construction. 

The project included three major elements:

M7-M12 Interchange

• A new motorway to motorway connection, between the existing M7 Motorway and the new toll free M12 Motorway, including construction of seven new bridges.

Elizabeth Drive Connection

• a new connection between the M12 Motorway and Elizabeth Drive, and the realignment of Wallgrove and Cecil Roads at Cecil Hills.

Westlink M7 Widening

• Widening the M7 Motorway from two lanes in each direction to three lanes between the M5 Motorway and Richmond Road (excluding the Light Horse Interchange).
• The upgrade of 41 bridges along the alignment. 

This critical piece of infrastructure will help the Airport Precinct come to life and become a new economic centre for Western Sydney in 2026.