Print
Construction of Springleaf Station and Tunnels for Thomson-East Coast Line (TEL)
Details
Locations:Singapore
Start Date:Nov, 2013
End Date:2020
Contract value: USD 156,000,000
Sectors: Civil Engineering, Transport
Description
Client: Singapore Land Transport Authroity (LTA)
Contract type: Construct only (Joint venture)
Project details:
Contract T208 Construction of Springleaf Station and Tunnels for Thomson-East Coast Line (TEL) is part of the 43km Rapid Transit System consisting of 31 new stations and 7 interchange stations. The Land Transport Authority in Singapore awarded the T208 contract to the joint venture of Leighton Contractors Asia and John Holland Pty Ltd. This is the second tunnelling project in Singapore awarded to the joint venture since 2011.
Contract T208 covers the construction and completion of Springleaf Station, twin bored tunnels, totalling 4.4km, substantial earthworks with a cut and cover box midway along the alignment and cut and cover tunnels at the north end of the station, and associated ancillary works. Tunnel excavation will be carried out by three slurry type tunnel boring machines (TBM), one of which will be recovered and re-launched. Construction works are scheduled for completion in 2020.
Geological Conditions
Excavation will be primarily within the Bukit Timah Granite (fresh rock and weathered) with localised Kallang Formation. Where poor ground conditions exist, a major program of ground improvement will be undertaken to control ground movement.