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Leighton Asia

25 May 2026

Building legacies beneath the surface – our tunnelling expertise

At Leighton Asia, we excel in civil infrastructure by delivering complex, integrated solutions that enhance mobility, sustainability, and connectivity. Tunnelling plays a crucial role in that journey.

From cut-and-cover and drill-and-blast to advanced Tunnel Boring Machine (TBM) methods, we apply deep technical expertise, meticulous planning, and a strong focus on safety, quality and in-tunnel works.

Here are some of our tunnelling achievements across the region:

Deep Tunnel Sewerage System Phase 2, Singapore - 7.9 km of deep used water tunnels, with shafts and hydraulic structures, constructed using TBMs. 

North-South Corridor, Singapore - Twin, three-lane vehicular tunnels (approximately 640 m) built beneath an existing expressway with ramps and a facility building to enhance north-south connectivity.

Tseung Kwan O – Lam Tin Tunnel, Hong Kong - 2.2 km dual highway tunnel and 650 m branch to ease traffic in the Kwun Tong District.

Central – Wan Chai Bypass, Hong Kong - A 4.7 km corridor, including 4 km of underground tunnels, designed to alleviate congestion in the busy commercial hub, featuring a green and sustainable design.

Driven by excellence, innovation and collaboration, the One Leighton Asia Team is proud of the legacies we have built, and those still to come.

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For 50 years Leighton Asia has built a strong track record as an international contractor in the construction, civil engineering and offshore oil and gas sectors.

 

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