Hong Kong’s Biggest Road Project Just Cleared its First Major Hurdle
AtkinsRéalis and AECOM have picked up one of the most closely watched infrastructure appointments in Hong Kong this year, taking on the design and construction consultancy role for the San Tin Section of the Northern Metropolis Highway.
The Highways Department of the Hong Kong Special Administrative Region Government signed the agreement on 11 June, handing the joint venture the job of producing the reference design, tender documentation and technical groundwork that moves the scheme towards its construction stage.
On paper it reads like another consultancy win, but the context tells a bigger story. The Northern Metropolis Highway is the largest single road project Hong Kong has ever taken on, and the roughly 9-kilometre San Tin Section has been pushed to the front of the queue as the first piece to be built. This appointment is an early signal of how one of the region’s most ambitious urban programmes intends to get moving.
Briefing
- AtkinsRéalis, in joint venture with AECOM, has been appointed by Hong Kong’s Highways Department to deliver design and construction consultancy services for the San Tin Section of the Northern Metropolis Highway.
- The full Northern Metropolis Highway runs around 24 kilometres and ranks as the largest single road project Hong Kong has ever undertaken, roughly five times the length of the Central Kowloon Bypass at Yau Ma Tei.
- The 9-kilometre San Tin Section links Yuen Long Highway and Tsing Long Highway, with a mix of viaduct, at-grade road and tunnel, plus major interchanges and a dual three-lane layout.
- The Highways Department is targeting technical readiness for tendering in 2027 and now believes the section can be commissioned ahead of its original 2036 target.
- The corridor underpins the wider Northern Metropolis, a 300-square-kilometre programme planned to house about 2.5 million people and support roughly 650,000 jobs near the Shenzhen border.
A Corridor At The Centre Of Hong Kong’s Northern Pivot
To understand why a single highway section is drawing this much attention, it helps to look at what sits around it. The Northern Metropolis is Hong Kong’s defining long-term development bet, a belt of new towns and innovation districts running along the boundary with Shenzhen. The plan covers roughly 300 square kilometres, about a third of the city’s land area, and is meant to eventually accommodate around 2.5 million residents and some 650,000 jobs, including 150,000 in innovation and technology. That’s a generational shift in where Hong Kong grows, and none of it works without transport that can carry the load.
This is where the San Tin Section earns its priority status. The corridor sits next to the Ngau Tam Mei New Development Area and the San Tin Technopole, the innovation hub designed to anchor the territory’s research ambitions and plug directly into the Shenzhen-Hong Kong science cluster at Hetao. Get the road right and the surrounding land can be opened up for housing and employment in sequence.
Wing Law, Chief Executive Office, Asia at AtkinsRéalis, framed the appointment in exactly those terms: “The Northern Metropolis Highway reflects the scale and direction of Hong Kong’s next phase of development, where infrastructure is required to enable new communities, economic activity and long-term regional connectivity. As the first implementation priority within the wider programme, the San Tin Section establishes a critical foundation for how the Northern Metropolis will evolve over time, unlocking housing supply, innovation clusters and technology-driven growth. We are bringing together global expertise and local understanding to deliver a transport corridor that is resilient, connected and designed to support sustained growth across Hong Kong and the Greater Bay Area for decades to come.”
The Largest Road Project Hong Kong Has Ever Built
The numbers behind the full scheme put the appointment in perspective. The Northern Metropolis Highway stretches roughly 24 kilometres across the northern New Territories, which the Highways Department describes as around five times the length of the Central Kowloon Bypass at Yau Ma Tei. It runs as a new east-west corridor linking Tin Shui Wai in the west to the New Territories North New Town near Ping Che in the east, broken into four sections and built mainly as dual three-lane carriageway with at least eight major interchanges tying into existing roads and the new development areas.
The San Tin Section that AtkinsRéalis and AECOM will work up is no soft introduction. Across its 9 kilometres it threads together viaduct, at-grade road and tunnel, along with major interchanges and the associated drainage, services and structures that come with a corridor of this scale. Connecting Yuen Long Highway and Tsing Long Highway as a direct route across the north, the dual three-lane design adds the kind of capacity the area will need as population and economic activity ramp up. The joint venture’s remit covers design development, procurement support and construction management and supervision, which means coordinating a multi-disciplinary programme where structures, geotechnics, traffic and environment all have to land together.
The Procurement Model
One detail that deserves more attention than a typical contract notice is how Hong Kong plans to build this. The Highways Department has flagged that it intends to widely adopt the Design and Build procurement approach for the works contracts, a model that lets contractors run detailed design and advance works in parallel rather than waiting for every drawing to be finalised first. For an overstretched delivery pipeline, that’s a meaningful lever. It pulls programme risk forward, hands more flexibility to the firms doing the building, and is being used here explicitly to compress the timeline and trim cost.
The early signs suggest the strategy is working. A department spokesman set out the plan and the confidence behind it: “To tie in with the development of San Tin Technopole and Ngau Tam Mei area, we will accord priority to taking forward the San Tin Section of the NMH, with the target of achieving the technical readiness for tendering next year. Furthermore, we plan to widely adopt the Design and Build procurement approach for the works contracts, enabling contractors to concurrently commence detailed design and advance works, and to leverage their technical expertise with greater flexibility, with a view to further accelerating the construction programme and reducing the cost. We have also maintained close communications with the construction industry, including local and international contractors and professional bodies, to harness industry expertise in refining the design and introducing innovative technologies, thereby further enhancing cost-effectiveness of the Project. With the optimised alignment and the contract procurement approach, we are confident that the San Tin Section can be commissioned ahead of the original target of 2036.”
A Joint Venture Built On Continuity
There’s a reason this particular pairing landed the work. AtkinsRéalis and AECOM already ran the investigation study for the full Northern Metropolis Highway, the upstream phase that assessed alignment options, constructability, traffic, environment and land take. Carrying that knowledge straight into the design and construction consultancy keeps the technical thread unbroken, which matters on a scheme where the alignment was optimised within three months and signed off by a project steering group spanning more than 15 policy bureaux and departments. Continuity like that tends to save time that would otherwise be lost re-learning the brief.
The professional team behind the appointment is broader than the two headline names suggest. Alongside AtkinsRéalis and AECOM, the joint venture draws in Shanghai Municipal Engineering Design Institute, Mannings (Asia) Consultants and an Academician of the Chinese Academy of Engineering, together with specialists across a range of disciplines. That blend of international and mainland engineering expertise is becoming a familiar shape for major Hong Kong works, reflecting both the technical demands of the corridor and the Greater Bay Area integration that runs through the wider programme.
Digital Delivery And Whole-Life Value
Beyond the structures themselves, the joint venture will lean on digital engineering to keep a complex programme on track. Building Information Modelling, digital systems and lifecycle management are all part of the delivery approach, used to coordinate the disciplines during design and to support how the asset performs once it’s open. On a corridor mixing tunnels, viaducts and interchanges, that level of digital coordination is less a nice-to-have than a basic requirement for spotting clashes early and keeping the programme moving.
The preparatory work that got the section to this point is worth noting too. Over the 15 months since the investigation study began in March 2025, the team completed an environmental impact assessment for the San Tin Section, including a 12-month ecological survey across dry and wet seasons, and pushed the road scheme through public consultation and statutory gazettal. The department says overall progress has run ahead of its initial expectations, which is not something you hear about megaprojects every day.
What It Signals For The Region
For the wider industry, the San Tin appointment is a useful read on where Hong Kong’s infrastructure money and ambition are heading. The Northern Metropolis is being positioned as the territory’s main engine of housing and innovation-led growth over the next two decades, and the highway is the connective tissue that makes the surrounding land developable. Land formation, utilities, rail and property all key off corridors like this one, so getting the first section moving sends a signal to contractors and investors that the programme is shifting from strategy documents to spades in the ground.
It also lands at a moment when Hong Kong is leaning harder into Greater Bay Area integration, with the Northern Metropolis pitched as the gateway between the city and Shenzhen rather than the edge of the map. A resilient east-west spine through the north supports that vision in a fairly direct way, knitting new towns and innovation districts into a single network and giving cross-border movement somewhere to go. The real test now is delivery, and with technical readiness for tendering targeted for 2027, the firms that win the works contracts will be the ones who turn this early groundwork into a road.
