The Land Transport Authority (LTA) has awarded two civil contracts for the Downtown Line 2 extension (DTL2e) at a combined contract value of around $735 million.
DE1 Station
The first contract, for the design and construction of an underground station (DE1) located along Sungei Kadut Avenue, was awarded to Woh Hup Engineering Pte Ltd at a contract value of around $285 million. The contract includes constructing a vehicular bridge to extend Choa Chu Kang North 7 and a pedestrian link-bridge over Pang Sua Canal to enhance connectivity between Yew Tee, DE1 station and the Rail Corridor.
Woh Hup Engineering Pte Ltd is a Singapore-registered construction company specialising in infrastructure and building projects. The company is currently involved in the design and construction of Punggol Interchange station for the Cross Island Line (CRL) Punggol Extension (CPe), and CR3 station for CRL Phase 1. Woh Hup Engineering Pte Ltd was also awarded the contract for tunnelling works between DE1 station and DE2 interchange station for the DTL2e project.
NS6/DE2 Interchange Station
The second contract, for the design and construction of the NS6/DE2 interchange station on the DTL2e, was awarded to a joint venture between Samwoh Corporation Pte Ltd and China Communications Construction Company Ltd (Singapore Branch). The contract, valued at around $450 million, involves the construction of an underground DE2 station on the DTL and a connected aboveground NS6 station between the Yew Tee and Kranji stations on the North-South Line (NSL).
Samwoh Corporation Pte Ltd is an established local company that provides civil engineering and construction services. Their completed projects include the Sentosa Gateway Tunnel, and the flyover slip road from Seletar West Link to Seletar Expressway (SLE). The company is currently involved in the enhancement of a section of Loyang Avenue, Telok Paku Road, Nicoll Drive and Changi Coast Road at the Changi Northern Corridor, as well as the enhancement of road networks at the Pan Island Expressway (PIE), East Coast Parkway (ECP) and Changi Flyover at the Changi Southern Corridor.
China Communications Construction Company Limited has an extensive track record in delivering design-and-build construction services both locally and abroad. The company is currently involved in the construction of CR6 Tampines North station, CR15 King Albert Park and CR17 Clementi interchange stations on the Cross Island Line, JS8 Boon Lay interchange station on the Jurong Region Line, and the Johor Bahru – Singapore Rapid Transit System Link viaduct and tunnels. It is also involved in the construction of the Jurong East Integrated Transport Hub.
Engineering Highlights
Located along Sungei Kadut Avenue and Sungei Kadut Central respectively, the DE1 and NS6/DE2 stations will be concurrently constructed using Earth Retaining and Stabilising Structures (ERSS) due to expected complex ground conditions in the area such as hard granite. The works will be carried out within a constrained workspace and in close proximity to the NSL. To minimise the impact on NSL commuters, LTA will plan and coordinate closely with relevant agencies and the NSL operator SMRT to carry out these works during non-operating hours.
LTA and the contractors will implement real-time monitoring of ground stability and relevant safety measures to ensure the safe conduct of construction works and minimise impact to nearby stakeholders and infrastructure. LTA has also carried out a comprehensive Environmental Impact Assessment and will implement all the necessary mitigation measures as outlined in the Environmental Monitoring and Management Plan.
Construction works for the DE1 and NS6/DE2 stations are expected to start in the second quarter of 2026. During the construction, LTA will also work closely with the stakeholders to provide all necessary mitigating measures to control construction dust, noise, and to ensure safety and vector control at all times. LTA and its appointed contractors will also work closely with residents and stakeholders to minimise any disruption and inconvenience that may be caused, and provide regular updates to residents and stakeholders on the progress of the works. We target to complete construction and commence passenger service for DTL2e in 2035.
About the DTL2e
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.
