Singapore explores undersea tunnel feasibility for Pulau Tekong link

Singapore's transport authorities are conducting a detailed feasibility study into the construction of undersea tunnels that would link the mainland to Pulau Tekong, a military island located off the northeastern coast. The proposed connection aims to improve accessibility to the island and streamline logistics for defence operations currently conducted there.

Undersea tunnel construction in Singapore's waters presents significant engineering challenges, including managing soft marine sediments, high groundwater pressures, and navigation around existing submarine cable routes and shipping lanes. Engineers will need to evaluate boring techniques, ventilation systems, and tunnel diameters suitable for both vehicular and potential future rail transport.

The feasibility study will also examine financial viability, comparing the costs of tunnel construction against alternative connectivity options. Preliminary assessments will determine optimal routes, construction timelines, and potential impacts on the surrounding marine environment. Singapore's experience with major underground infrastructure projects, including its extensive MRT network and recent deep-tunnel sewerage systems, provides relevant expertise for such an undertaking.

The evaluation comes as Singapore continues investing in strategic infrastructure to support national defence capabilities and economic development. Officials have indicated that any decision to proceed would depend on study findings and resource allocation priorities within the broader national infrastructure roadmap.