Sydney Metro North West

Sydney Metro Northwest, the first stage of Sydney Metro, delivers new public transport services to Sydney’s fast-growing north-west communities.

The design objective was integrated structural and architectural elements, including station platforms, bridge and viaduct, to create a high-quality, simple and elegant piece of civic infrastructure that relates well to its existing and future environment, and expresses the identity of Metro Northwest.

A suite of unique large-scale structural and civil elements was developed; proportionally light, slender and scaled to lessen their visual bulk, they have a consistent visual character. Clear relationships are present between the structural elements and echoed in subtle geometries, rhythm, proportion and detail.


    Salini Impregilo; Transport for NSW


    Sydney North West

  • YEAR



    4.5km length


    $340 million

    Anthony Quan Cathryn Drew-Bredin Joyce Lim

    Brett Boardman

For the first time, people in Rouse Hill will have their own modern train station, and now it will be complemented by a well-designed, spectacular looking bridge that will be a landmark in the region. The new bridge is a superior design…

Former NSW Premier, Ms Berejiklian.

The most significant design task was the 135m span, twin cable-stayed rail bridge, a first in Australia. The load of moving trains on the curved structure called for an inventive engineering approach. The cable-stayed bridge is a holistic design of structure, piers, masts and parapets which are streamlined to reduce visual and physical impacts on community and context, achieving a refined elegance. The bridge fits comfortably and harmoniously within its surrounds and complements the structural language established for the project.


This project pushes the performance boundaries of precast concrete; close collaboration with engineers and contractor was essential. Maximising spans whilst maintaining slenderness was tested through critical assessment of each structural element. Joint types, span lengths, and construction methodology were integral to the success of the design. Thorough concrete benchmarking and analysis of concrete mixture specifications, together with life-size prototyping, ensured design performance and more importantly uniform colour.


The final built structures are testament to the entire team who reviewed multiple iterations of each critical element. Key design objectives were passionately adhered to and made a reality through thoughtful engineering, analysis, and diligent architectural negotiation.

Salini Impregilo placed a high value on design in engineering and worked closely with DesignInc to drive a high-quality outcome for Transport for NSW. DesignInc congratulates Salini Impreglio on its achievements for Sydney Metro Northwest and is proud to have contributed to such an innovative and sustainable, globally recognised project.

Anthony Quan , Director 229_anthony-quan.jpg