Bouygues secures €173M anti-flood tunnel project in Hong Kong, with €94M for its share
The Drainage Services Department of the Hong Kong government has entrusted a consortium formed by Bouygues Travaux Publics and China Road and Bridge Corporation with the construction of the East Island drainage tunnel. The portion allocated to Bouygues Construction amounts to 94 million euros, an order intake recorded in the third quarter of 2026.
A public infrastructure project designed to limit flooding in the island's east
Bouygues Construction announced on October 13, 2026 that its subsidiary Bouygues Travaux Publics has partnered, as part of a joint venture, with China Road and Bridge Corporation (CRBC) to construct the Hong Kong East Drainage Tunnel (HKEDT). The contract was awarded by the Drainage Services Department (DSD), a department of the Hong Kong Special Administrative Region government.
The project is part of the government's policy to strengthen flood prevention infrastructure. The tunnel is designed to intercept rainwater from upstream watersheds and convey it directly to Pak Sha Wan, a discharge point to the sea located nearby.
The stated objective is to relieve the existing downstream drainage network and reduce flood risks in the Eastern District of the island, where soil impermeability and urban density increase this risk, according to the press release.
A €173M contract with delivery scheduled for 2030
The total contract value reaches 173 million euros for the entire consortium. Bouygues Construction's share is calculated at the reference exchange rate HKD/EUR for August 2026.
Delivery of the infrastructure is scheduled for 2030. To put this in perspective, Bouygues Construction generated revenue of 10.6 billion euros in 2025.
3.6 kilometers of tunnel and four combined excavation techniques
The works involve a tunnel 3.6 kilometers long with a diameter of approximately 5 meters, connecting the Shau Kei Wan and Chai Wan districts on the island's east coast to Pak Sha Wan. The consortium will also construct seven water collection structures, six connecting galleries and an outlet ensuring discharge to the sea.
The project will combine tunnel boring machine excavation, blasting, the so-called "drill-and-break" method (excavation of massive rock or concrete) and pipe jacking.
Bertrand Burtschell, Deputy Chief Executive Officer of Bouygues Construction in charge of the Civil Works division, recalled that this contract comes nearly twenty years after the delivery of the Hong Kong West Drainage Tunnel, completed by the group in the same region.
