SINGAPORE – A construction firm overseeing the excavation of a tunnel was fined $84,000 on July 24 after pleading guilty to work lapses leading to a sinkhole that closed traffic for about a week in November 2022.
The tunnelling works caused a part of Farrer Road to collapse, which led to a sinkhole forming on a slip road leading from Holland Road to Farrer Road on Nov 15, 2022.
On July 24, a company representative from Nishimatsu Construction pleaded guilty to three charges under the Building Control Act. Three similar charges were taken into consideration during sentencing.
In one of the charges, Nishimatsu Construction admitted to failing to comply with the conditions set out in a structural work permit, including for failing to monitor and review key tunnelling operational parameters.
The Japanese firm was also charged with deviating from the approved plans, and failing to carry out the necessary probe drilling and grouting from ground surface at the appropriate juncture.
The failures of the firm later led to an 8m-long, 4m-wide, and more than 3m-deep sinkhole.
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