A drinking water pipe underneath the Hong Kong Port of the Hong Kong-Zhuhai-Macao Bridge (HZMB) burst on Monday.
Two road cave-ins measuring about 2 meters in diameter and a meter deep were also found in the vicinity, the Hong Kong Economic Journal reports.
At around 1 a.m., employees of the Passenger Clearance Building at the port saw muddy water jets shooting from the ground in the front of the building.
They notified the Water Supplies Department (WSD) and cordoned off the area with railings.
The WSD staff who arrived at the scene found that the water was coming from a broken underground pipe for drinking water, around 300 millimeters in diameter.
They were able to fix the pipe and fill the cave-ins with silt at around 3 p.m, Apple Daily reported.
There were not too many people in the area, and passengers boarding buses were not affected.
However, the water supply of several fire hydrants outside the building was disrupted, a WSD spokesperson said.
The WSD and the Highways Department are jointly conducting an investigation into the cause of the incident, which occurred only four months after the mega bridge opened on Oct. 24 last year.
The damaged water pipe and cave-ins raised safety concerns about the structure of the artificial island where the building is situated.
A passenger voiced fears that the incident could portend serious subsidence of the artificial island on which the Passenger Clearance Building is located.
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