North-South Corridor project delays and cost increases

The Land Transport Authority (LTA) has confirmed that the North‑South Corridor (NSC), Singapore’s longest underground road project, will experience further schedule slips and a rise in estimated costs. Senior LTA official Jeffrey Siow said the agency will prioritise surface‑level works to limit noise and dust for nearby residents, aiming to complete those works by the end of 2027. The decision follows a recent review that identified higher construction material prices and tighter site constraints as key drivers of the cost escalation.

Project Overview

The NSC is a 21‑kilometre expressway that will link the northern residential towns to the city centre and the southern industrial zones. It includes a 10‑kilometre underground tunnel, several new interchanges, and integrated bus lanes. The project was originally slated for completion in 2026 with an estimated budget of S$7.5 billion.

Economic and Market Impact

The upward revision of the NSC budget is expected to add roughly S$300 million to the overall cost, according to LTA’s internal estimates. While the additional spending is absorbed within the agency’s long‑term capital plan, it may tighten funding for other transport initiatives. Local construction firms stand to benefit from the accelerated surface works, but higher material prices could compress profit margins across the sector.

Political and Community Impact

The delay has drawn comments from opposition lawmakers who argue that the government should improve project oversight. Residents along the planned surface routes have expressed relief that LTA will focus on dust and noise mitigation, but they remain concerned about prolonged traffic disruptions. The LTA’s commitment to finish surface works by 2027 is intended to demonstrate responsiveness to community feedback.

What Happens Next

LTA will issue a revised construction timetable in the coming weeks and will monitor cost developments closely. The agency has pledged to publish quarterly updates on progress and to engage with affected neighbourhoods through town‑hall meetings. The final underground tunnel segment is still targeted for completion in 2028, subject to funding approval and any further supply‑chain constraints.