The new line extension will provide easier access to the central business district and related work, retail and entertainment facilities, contributing increased economic and social value.

The Circle MRT line is a medium-capacity mass rapid transit (MRT) line, and the fourth to be opened in Singapore, with initial Stage 1 construction commencing in 2002. The line currently runs in an incomplete loop from Dhoby Ghaut station in the city center to HarbourFront Station in the south.

In 2013, the Singapore Ministry of Transport announced the construction of Circle Line Stage 6 (CLS6), a 4-kilometer extension that will run between HarbourFront Station and Marina Bay Station, effectively closing the loop and improving direct east-west connectivity.

 

Stage 6 tunnel alignment
With completion expected in 2025, the CLS6 will allow commuters to enjoy a direct route between key employment areas in the Central Business District, upcoming developments in the Marina Bay area, and retail and office centers in the Harbour Front area.

AECOM was appointed to oversee architectural services and design the civil infrastructure for nearly 4 kilometers of tunnel-alignment works.