The last Tunnel Boring Machine (TBM) for the 42km Downtown Line has launched from the Prison Shaft today. The ∅6670mm STEC EPBM will spend the next 2.5 months boring the 350m Bukit Panjang bound tunnel towards Tampines West Station, with the final breakthrough scheduled in June.
It's sister Expo bound machine is currently about 75% through the tunnel excavation and should arrive at Tampines West in 2 weeks time.
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