AECOM to provide detailed design services to support delivery of Sydney Metro West

Key Terms

twin-bore tunnel technical

A twin-bore tunnel is a pair of parallel underground passageways dug side by side, usually with one bore handling traffic or services in each direction, like two separate lanes of a highway under the ground. For investors, it matters because building two bores instead of a single large tunnel affects project cost, construction time, maintenance needs and safety risk—factors that influence budgets, revenue forecasts and the likelihood of delays or extra spending during infrastructure projects.

traction power system technical

A traction power system is the network of electrical equipment and lines that supplies power to electric trains, trams, metros and other rail vehicles, similar to how plumbing delivers water to appliances. Investors care because it determines reliability, operating energy costs, capacity for service growth and the size and timing of capital and maintenance spending; upgrades or failures can materially affect revenue, punctuality and long‑term returns.

tunnel ventilation system technical

A tunnel ventilation system is the network of fans, ducts, vents and sensors that controls airflow, removes vehicle exhaust or smoke, and keeps temperature and air quality safe inside road, rail or underground tunnels. For investors it matters because ventilation affects regulatory approval, safety, operating and maintenance costs, and the risk of closures or fines—much like a building’s heating and air system determines habitability and running costs.

automated modelling technical

Automated modelling is the use of computer programs to build forecasts, valuations or risk assessments from data without manual, step‑by‑step human input. Like a smart recipe that combines ingredients and adjusts cooking time on its own, it lets companies and analysts produce fast, repeatable projections and spot patterns across large datasets. Investors care because it can speed decision‑making and reveal insights, but it can also amplify hidden assumptions or data errors if not checked.

digital delivery technical

Digital delivery is the transmission of products, services, documents or content electronically over the internet or private networks instead of by physical shipment or in‑person exchange. Like receiving a letter by email instead of postal mail, it can lower costs, speed distribution, and scale reach, so investors watch it as a driver of higher margins, recurring revenue, faster growth, and different regulatory or cybersecurity risks.

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DALLAS--(BUSINESS WIRE)-- AECOM (NYSE: ACM), the trusted global infrastructure leader, today announced it will deliver detailed design services for the Sydney Metro West Line Wide Systems package in a joint venture with WSP, supporting John Holland, the project lead and contractor. Sydney Metro West is a transformative project that is expected to double rail capacity between Parramatta and Sydney CBD, providing Sydney with fast and reliable transportation and aiding the city’s rapid growth.

The joint venture will lead the design of the 24-kilometer twin-bore tunnel fit out, a new metro train depot and service facility, a new metro traction power system and tunnel ventilation system, and the train systems, operations and maintenance package.

“Sydney Metro West will play a vital role in shaping a more connected, livable Sydney, delivering faster, more reliable journeys for communities now and into the future,” said Mark McManamny, AECOM's chief executive for its Australia New Zealand region. “AECOM is globally recognized for our ability to deliver rail systems at this scale, and we’ll apply AECOM’s depth of expertise from Australia, New Zealand, the United Kingdom, Europe and Hong Kong to deliver a safe, reliable and sustainable metro for Sydney."

AECOM is delivering a better world through the application of cutting-edge digital technologies. On the Sydney Metro West project, the joint venture’s advanced digital delivery approach will guide the design and management of this complex, major rail system. The project will feature fully automated modelling for the tunnel fit-out systems, enabling efficient updates and seamless integration across the long linear rail network and the containment infrastructure, spanning the two 24‑kilometer tunnels. A collaborative digital design environment will be implemented to enhance coordination across design offices in Australia, New Zealand, Europe and Asia, enabling seamless stakeholder reviews and efficient feedback resolution.

“We are proud to support the delivery of one of Sydney’s most complex and impactful transportation projects,” said Mark Southwell, chief executive of AECOM’s global Transportation business. “Our unmatched technical excellence, approach to innovation, and deep history of delivering transformative infrastructure in Sydney make us ideally positioned to deliver on this project, and these advantages are part of why AECOM remains Engineering News-Record's number one transportation firm in the world.”

The appointment as designer for the Sydney Metro West Line Wide Systems package builds on AECOM’s track record of successfully delivering on large, complex rail systems in Australia and New Zealand, including the recently opened Metro Tunnel in Melbourne, the METRONET in Perth, and the soon-to-open City Rail Link in Auckland.

About AECOM
AECOM (NYSE: ACM) is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.

Forward-Looking Statements
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View source version on businesswire.com: https://www.businesswire.com/news/home/20260211334893/en/

Investor Contact:
Will Gabrielski
Senior Vice President, Finance, Treasurer
213.593.8208
William.Gabrielski@aecom.com

Media Contact:
Brendan Ranson-Walsh
Senior Vice President, Global Communications
213.996.2367
Brendan.Ranson-Walsh@aecom.com 

Source: AECOM