T316
Underground Infrastructure
Changi Airport
Twin bored tunnels from Changi Airport Terminal 5 to Changi Airport (CGA) Station Terminal 2
LTA CRL CR202
Design and Construction of Bored Tunnel between Fairways Drive and Sin Ming Walk
Client :
Contract :
Location :
Period :
Land Transport Authority
Design and Build
Singapore
Dec 2022 - Jun 2032
11.3m I.D.
Slurry TBM
5,000m
Bored Tunnels
Contract CR202 involves the design and construction of a 5km large-diameter tunnel between Fairways Drive and Sin Ming Walk. STEC undertakes the project in a joint venture with Obayashi Corporation. Two kilometers of the tunnel will under-cross the Central Catchment Nature Reserve. The bored tunnel will also cross underneath Eng Neo Avenue Forest, Windsor Nature Park, Peirce Secondary School, Pan Island Expressway (PIE), and Upper Thomson Road.
The tunnel - containing two mainline tracks - will be constructed with a large TBM, which measures approximately 12m in diameter. The contract also comprises a TBM launch shaft, transition tunnels to Future Underground Infrastructure, a Facility Building, and a Temporary Staging Area. OC-STEC CR202 JV's construction approach will optimize productivity while ensuring strict compliance with environmental requirements.