Singapore’s Land Transport Authority (LTA) has awarded the final civil contract for the Downtown Line 2 extension (DTL2e) to China Railway Tunnel Group Co Ltd (Singapore Branch). Valued at around S$199 million, this contract includes the design and construction of tunnels between the existing Bukit Panjang station and the upcoming DE1 station.
Construction works for the tunnels are scheduled to begin in the third quarter of 2026, and passenger service for DTL2e is targeted to commence in 2035.
According to LTA, twin bored tunnels – each approximately 1.8 km long – will be built beneath Woodlands Road and existing infrastructure such as the Kranji Expressway (KJE) flyover. The construction will be carried out within a limited workspace due to its proximity to the existing Bukit Panjang station.
To minimise disruption to existing railway structures as well as DTL commuters, LTA will coordinate with relevant agencies and the DTL operator, SBS Transit, to undertake sensitive works during non-operating hours. LTA and the contractors will also implement real-time monitoring of ground stability and relevant safety measures to ensure the safe conduct of construction works, and to minimise the impact on nearby stakeholders and infrastructure.
China Railway Tunnel Group specialises in tunnelling and infrastructure projects. The contractor is currently completing the construction of Prince Edward Station for Circle Line 6.
Singapore’s DTL2e line 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, the DTL2e will enhance rail connectivity in Singapore’s north-western region and shorten travel times for commuters travelling to and from the north and north-west of the country. It will improve access to existing and new growth areas, such as Yew Tee and the future Sungei Kadut Eco-District.
All images: LTA
