June 2019 - Prince Edward Road station progress

Prince Edward Road station is located in an extremely tight location bounded by Shenton Way to the west, the Marina Coastal Expressway to the south and the Bestway building to the north-east. Several religious buildings dot the site, making it a tough fit to construct a station in the location while being able to maneuver machinery about the site.

21 May 2019 - An aerial view of the Prince Edward Road station site.
Source: Zaw Myo Latt

The contract for the project - Contract 885 - involves the construction of a 3-level underground station with stacked platforms and 2 exits, including two bored tunnels towards Cantonment station. Prior to commencement of ground works, demolition of several buildings was necessary and the existing Shenton Way bus terminal had to be relocated.

22 October 2014 - The Bestway Building extension on the left had to be demolished for construction to proceed.

22 October 2014 - A view of Palmer House from the back of Bestway building compound, also to be demolished.

22 October 2014 - The bus stand at the former Shenton Way bus terminal.

22 October 2014 - The Haji Mohammed Salleh mosque, a sensitive structure to be maintained at the site.

Following the demolition works, ground preparation works finally could commence on the site. As with all underground work sites, the first stage was to outline the excavation site with the temporary earth retaining & stabilizing system, in this case diaphragm walls. With the walls in place, horizontal braces called struts can be installed to maintain rigidity of the walls to prevent inward collapse.

11 February 2019 - Site for entrance B

17 June 2019 - Diaphragm wall works at entrance B site

The site for entrance B is located along Shenton Way, next to the Lippo Building. Works have progressed from ground strengthening works to installation of the diaphragm walls. Once the walls have been completed, excavation work for the entrance structure and connecting subway can commence.

11 February 2019 - Excavation works near the launch shaft area.

17 June 2019 - The launch shaft area to the left & excavation with installation of struts
to the right.

17 June 2019 - Installation of the gantry crane near the launch shaft underway.

At the launch shaft area, works have progressed from excavation to installation of the gantry crane. The eventual launch shaft area will be be covered by a noise enclosure once installation of the crane is completed, so minimize noise disturbance to the nearby office buildings.

11 February 2019 - Ongoing work for station diaphragm wall.

17 June 2019 - On going work for station diaphragm wall.

11 February 2019 - Diaphragm wall works near the Bestway Building.

17 June 2019 - Diaphragm wall works near the Bestway Building

Diaphragm wall works continue at the main station area as well as on the eastern side near the Bestway Building. The station will be built using the top-down method where each level's permanent slab is cast before excavation continues on downwards, using the concrete structure as a rigid means of stabilizing the site. Once the diaphragm walls are completed, the first level of excavation can commence till just under the station roof slab depth. Thereafter, the slab will be constructed and poured, while openings in the roof slab allow for access to the lower levels.