Singapore LTA CCL4 C855

Construction of underground Holland Village Station, Buona Vista Station, Kent Ridge Station and One North Station 
8,250m
Bored Tunnels
6.35m Dia.
EPB Machine

The Circle Line Stage 4 C855 project is a design and build project which STECS undertook in the name of a joint venture with Woh Hup and Alpine Mayreder. This project includes construction of Holland Village Station, Buona Vista, Kent Ridge and One North Station, 8.25km TBM tunnels and 0.35km C&C tunnel. Two 6.35m diameter EPB machines and two 6.35m diameter slurry machines were used to construct the bored tunnels. The contract value is S$399.91 million. 

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