Wednesday, 17 September 2014

Bright Hill - Once Stacked

Bright Hill station, more commonly known as Sin Ming or 'T7' station during the planning stage of the line, was originally designed to be a stacked interchange with the future Cross Island Line. Along the tunnel alignment to Upper Thomson, 2 escape shafts had been planned to be constructed within Flame Tree Park and Windsor Park due to the semi-stacked configuration of the tunnels.

The original plans were scrapped at the last minute, and the architect rushed out a new set of drawings in May 2013. The twin bored tunnels are now level with each other, omitting the need for the 2 escape shafts as the cross passages can be conventionally constructed by mining. The new design incorporates two provisioned box tunnels at the roof of Bright Hill station for the future Cross Island Line (CRL). The box tunnels are orientated parallel with Sin Ming Walk/Avenue, giving a strong indication that the CRL will head straight into the Central Catchment towards Eng Neo. There will also be a stub tunnel abutting from the Woodlands bound tunnel, believed to be for the sharing of locomotives between the 2 lines.

Progress Update
Under T211, a replacement sports facility is being built for Bishan Park Secondary School as the existing one would be demolished for the station construction. The facility will be ready by November this year. Preparation works are underway for a road diversion too.

T211 Site Office overlooking the Bishan-AMK Park
New sports facility U/C. A temporary bus stop can be seen being delivered on a trailer within the site as well.
Original design in Jan 2013 showing the stacked tunnels toward Sin Ming
Revised design in May 2013. The escape shafts along Upper Thomson Road have been removed.
Main span of the station will be located beneath the road
Northern end of station box - future launch shaft towards Mayflower & provisioned CRL box tunnel

Site Office
T211 Site Office overlooking the Bishan-AMK Park

1 comment:

Note: only a member of this blog may post a comment.