A new metro station on the Cross Island Line (Line 8) and the associated tunnels: €400 million (S$644 million) of works – A technological challenge in a very tight urban environment.
Bachy Soletanche Singapore in a joint-venture with Gammon Construction and Engineering, has been awarded the design-build contract for the extension of Ang Mo Kio metro station and the associated tunnels. Ang Mo Kio station will connect the new Cross Island Line (CRL) and the existing North–South Line (NSL).
Bachy Soletanche Singapore has been pioneering geotechnical and foundation engineering solutions for more than 50 years. The Soletanche Bachy International and Bessac subsidiaries are also part of the project.
The contract was awarded by Singapore’s Land Transport Authority and amounts to €400 million (S$644 million). It covers construction of:
- 1 underground station and tunnels;
- 2 underground pedestrian passages;
- Addition and alteration (A&A) of the existing Ang Mo Kio station.
Works are expected to begin in the fourth quarter of 2021 and the station is due to open in 2030.
Building this new station in a tight urban environment, with challenging ground conditions, will require unique technical expertise. To reduce vibration and control the excavation, the joint-venture will use innovative equipment including the Hydrofraise® equipped with “grippers”, which in particular limits vibration during hard soil excavation.
This project is part of the Cross Island Line Phase 1 (CRL1). The CRL is the eighth line in Singapore’s mass rapid transit system. CRL1 will be 29 km long and have 12 stations, and in due course simplify travel as well as connections between the various rail lines reaching some 100,000 households. CRL1 will improve access to industrial areas, leisure parks and new business hubs in the city.
Bachy Soletanche Singapore is working on other public transport projects in this country, including construction of the tunnel between Suffolk Walk in Newton and Novena Rise, and three metro stations on the Thomson–East Coast line.