What caused the record number of potholes in Singapore last month?

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Record Pothole Numbers Attributed to Prolonged Heavy Rainfall

The record number of 2,570 potholes identified on Singapore's roads last month was primarily caused by prolonged periods of heavy rainfall. This figure represents the highest monthly total recorded and significantly exceeds the typical number of potholes observed during the usual rainy season, more than doubling the average.
Impact of Heavy Rainfall on Road Conditions

The exceptionally heavy rainfall experienced last month led to a substantial increase in the formation of potholes. These depressions on the road surface develop when rainwater penetrates existing cracks, weakening the underlying structure. This phenomenon was exacerbated by the extended duration and intensity of the rain, creating a surge in road defects across the island.
Challenges in Pothole Repair During Inclement Weather

Repairing potholes became significantly more challenging due to the persistent heavy rain. The effectiveness of pothole patching relies on the road surface being dry to ensure proper adhesion of the repair materials. Prolonged wet conditions directly hampered these repair efforts, making it difficult for authorities to address the rapidly increasing number of defects promptly.
Response and Repair Efforts by LTA

In response to the surge in potholes, the Land Transport Authority (LTA) escalated its repair operations. The number of crews deployed for road repairs was tripled to manage the situation. As of the day before the parliamentary session, approximately 95 per cent of the identified potholes, particularly the more serious ones, had been repaired, demonstrating a concerted effort to mitigate the impact on road users.

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What caused the record number of potholes in Singapore last month?

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