Construction challenges have arisen, including hard rocks and water seepage, along the North-South Corridor. These issues are unexpected and have been flagged by the LTA.

The challenges are likely to affect the project timeline. The LTA will provide an updated completion timeline at a later time.

Further details on the construction challenges and the updated timeline can be found in the source publication. The LTA has not yet released the revised completion date, but an update is expected to be provided in due time.