5,800m

7.2m Dia.

The Deep Tunnel Sewerage System Phase 1 T-01 project is the first design and build project for which STECS undertake in the name of a joint venture with Woh Hup. This project features the use of New Austrian tunneling method and tunnel boring method. A 7.2m diameter EPB Machine was used to construct the bored tunnels. The contract value is S$80.6 million.