SINGAPORE: The Land Transport Authority (LTA) has finally completed all tunnelling work for the Circle Line.
Engineers said working on stage four of the project was particularly challenging because of the route's geological conditions.
Ow Chuan Nam, director, Circle Line 4, LTA, said: "This route consists of… soft ground plus hard ground. You name it, we have it. And also, it's quite a long route to bore through, three kilometres in fact.
LTA said work on the Circle Line is on schedule, with about 76 per cent of the railway track already completed. All forty trains for the Circle Line have been delivered to the Kim Chuan Depot.
Five stations - Dhoby Ghaut, Bras Basah, Esplanade, Promenade and Tai Seng - are expected to get their temporary occupancy permits by the end of 2009, with revenue services for the remaining stations expected to start progressively from 2010 onwards.