SINGAPORE - The sixth stage of the Circle Line (CCL6), which will link up Harbourfront and Marina Bay stations, will have three stations: Keppel, Cantonment and Prince Edward.

This will "close the loop" of the line, said the Land Transport Authority (LTA) on Thursday (Oct 29), as it announced the alignment and station locations of the CCL6. The project will be completed by 2025.

It will cost $3.7 billion to build the 4km underground line and stations, and another $2.3 billion to expand the current Kim Chuan depot to stable more trains.

With the CCL6, commuters can enjoy a more direct route to the Central Business District, the Marina Bay Area and Harbourfront.

For example, a commuter heading to Marina Bay from Telok Blangah currently has to make two MRT transfers: from the CCL to the North-East Line and North-South Line.

With the closed loop of the Circle Line, he can reach his destination in a single train ride and cut his travelling time by a third, of about 10mins.

The Keppel station will be located along Keppel road near the Keppel Distripark.

The Cantonment station will be sited near to the Tanjong Pagar Railway Station, and offer access to the Spottiswoode Park Estate and Cantonment Towers.

It will be built under a section of track platforms of the old railway station. The LTA, together with the Urban Redevelopment Authority, are in discussions with the heritage community on how this section of the old railway station can be preserved.

Meanwhile, the Prince Edward station will be located near Palmer Road and offer access to 76 and 78 Shenton, with heritage landmarks such as the Hock Teck See Temple, the Bestway Building and the Haji Muhammad Salleh Mosque, in the vicinity.

These landmarks will not be affected by the CCL6 rail project, the LTA said.

To make way for the CCL6, four part lots of private land - comprising open areas, grass verges, container stacking lots and driveways - will have to be acquired by the Government. The combined land space is 7,721.6 square metres.