Singapore’s Land Transport Authority (LTA) has awarded the first civil contract for the Downtown Line 2 extension (DTL2e), which includes three tunnels.
The S$326m (US$253m) contract, awarded to a joint venture of Woh Hup Engineering Pte Ltd and Underground Technology Engineering Construction Pte Ltd, is for the design and construction of two mainline tunnels and a tunnel connection to Gali Batu Depot.
Each tunnel will be around 1km long and at depths of up to 21m. They will be built close to the North-South Line (NSL) and existing infrastructure such as Sungei Pang Sua and Pang Sua Canal. Additionally, a cut and cover tunnel will be built at Gali Batu Depot as part of a new reception track.
Woh Hup Engineering is a Singapore-based construction company involved in the design and construction of Punggol Interchange station and tunnels for Cross Island Line-Punggol Extension (CPe) as well as Loyang station and tunnels for Cross Island Line Phase 1 (CRL1). Underground Technology Engineering Construction is currently involved in the construction of tunnels between CR2 Aviation Park station and the Changi East Depot for CRL1.
Construction works are expected to start by the second quarter of this year and passenger service for DTL2e is targeted to commence in 2035.
DTL2e comprises three stations, the first station (DE1) after Bukit Panjang station will be an underground station located along Sungei Kadut Avenue. The new terminus for the DTL will be an underground interchange station (DE2) connected to a new aboveground station (NS6) between Yew Tee and Kranji stations on the NSL.
When completed, DTL2e will enhance rail connectivity in the north-western region, and will shorten travel times for commuters travelling to and from the north and north-western parts of Singapore. It will provide improved access to existing and new growth areas such as Yew Tee and the future Sungei Kadut Eco-District, as well as amenities such as the Rail Corridor and Pang Sua Park Connector.
