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ZÜBLIN awarded € 309 million contract in Singapore

Press release   •   Sep 13, 2017 13:25 CEST

STRABAG subsidiary ZÜBLIN was hired to build two tunnels for the Deep Tunnel Sewerage System in Singapore. Copyright: STRABAG, ZÜBLIN
  • Tunnelling works for sewerage system in Singapore
  • Construction time from March 2018 to September 2023

ZÜBLIN, a subsidiary of European-based construction group STRABAG SE, has been hired by PUB, Singapore’s national water agency, to build 11.9 km of tunnels for the sewerage system of the city. The contract is a part of the Deep Tunnel Sewerage System (DTSS) Phase 2 project and worth € 309 million. Construction is scheduled to start in March 2018 and will be finished in September 2023. Four tunnel boring machines will trench to give three-and-a-half to six metre wide tunnels.

About Deep Tunnel Sewerage System (DTSS)

The DTSS uses deep tunnel sewers to convey waste water by gravity to centralised water treatment plants, where the waste water is cleaned. The whole DTSS project is divided into two phases. Phase one was completed in 2008, where ZÜBLIN successfully constructed one section of the project. Phase two will be completed in 2025. Upon completion, Singapore will have an additional conveyance system that is made up of 60 km of link sewers and 40 km of deep tunnels.

Stuttgart-based Ed. Züblin AG has about 14,000 employees and, with an annual output of over € 3 billion, is one of Germany’s leading construction companies. Since it was founded in 1898, ZÜBLIN has been successfully realising challenging construction projects in Germany and abroad and is the number one in the German building construction and civil engineering segment. The company’s range of services comprises all construction-related tasks – from civil engineering, bridge building and tunnelling to complex turnkey construction to structural timber engineering and public-private partnerships. ZÜBLIN attaches great importance to partnership-based cooperation, and our ZÜBLIN teamconcept has proved its value as a successful partnering model for more than 15 years now. Current construction projects of the company, a subsidiary of globally operating STRABAG SE, include the new Axel Springer building in Berlin, Messehalle 12 in Frankfurt and the Albabstieg Tunnel along the new Wendlingen–Ulm railway line. More information is available at

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