At 55km in length, the Hong Kong-Zhuhai-Macau Bridge is the world's longest sea crossing. Its successful completion after 9 years of construction connects the cities of Hong Kong, Macau and Zhuhai, reducing the previous 1 hour long ferry connection to a 40min car journey.

Hailed as an engineering wonder, the Hong Kong-Zhuhai-Macau Bridge further improves transport connectivity between Hong Kong, Macau and major cities in Guangdong province. This marks a new milestone in the integration process of the Greater Bay Area – the Chinese government’s national strategy to create a world-class city cluster to lead the country’s future development.

Arup played an extensive role in the crossing's delivery. Our work ranged from the preliminary design for the main bridge in mainland waters to environmentally friendly reclamation solutions for the Hong Kong Boundary Crossing Facilities (BCF) artificial island, and the tender and construction of the Hong Kong Link Road.

We also undertook the feasibility study and detailed design for the Tuen Mun – Chek Lap Kok Link Northern Tunnel and Southern Connection Viaducts, preliminary and detailed design for the Macau Link Road, and the infrastructure works of the Macau BCF.

Unique and beautiful

Arup’s involvement in the main section in the Zhuhai waters started in 2009 when we carried out the concept and preliminary design in a joint venture with China Highway and Planning Design Institute and other firms.

Hong Kong Zhuhai Bridge
The main section comprises three navigation channel bridges: Jiuzhou, Jianghai and Qingzhou. As the link would be prominent from the land, sea and air, a unique and aesthetic design was highly desired. Resilience and sustainability were also high on the agenda to address concerns such as frequent typhoons and habitats of dolphins.

All the three bridges were proposed to be cable-supported with central towers of different shapes placed between the carriageways to give both a visual affinity and variety between the bridges. From environmental considerations, single column piers were used to support the structure with piles buried in the seabed. This minimises obstruction to water flow and impact on the habitat of the Chinese white dolphins.

At the detailed design stage, the design of all three bridges were revisited and the Jiuzhou Bridge has been retained in its original form with sail-type towers.

Hong Kong Zhuhai Crossing video cover
Watch: How 300 designers, engineers, planners and consultants from 9 offices helped realise this engineering wonder