Water leaks into Blue Line MRT tunnel in Wongwian Yai area after heavy rain

MGR Online•Economy•9d ago

Reader Briefing

Heavy Rainfall Causes Water Infiltration into Under-Construction Blue Line MRT Tunnel Near Wongwian Yai Station, Prompting Ministerial Inspection.

•Water leaked into the under-construction Blue Line MRT tunnel near Wongwian Yai station due to heavy rain on May 8, 2026.
•Deputy Prime Minister and Minister of Transport, Piphat Ratchakitprakarn, and other ministers, including Prime Minister Anutin Charnvirakul, inspected the site.
•The affected section is part of Contract 4 (Phra Phutthayotfa Bridge – Dao Khanong), managed by UNIQ Engineering and Construction Public Company Limited, and the situation is reported to be under control.

Overview

•On the evening of May 8, 2026, heavy rain caused water leakage into the under-construction Blue Line MRT tunnel.
•Deputy Prime Minister and Minister of Transport Piphat Ratchakitprakarn, alongside other ministers, rushed to the scene at approximately 11:00 PM to inspect the situation.
•Prime Minister Anutin Charnvirakul also visited the site to monitor the situation.
•The incident occurred in the tunnel section for the Blue Line MRT, Tao Poon – Rat Burana (Kanchanaphisek Ring Road) project, near Wongwian Yai station.
•The construction site is part of Contract 4, covering the Phra Phutthayotfa Bridge – Dao Khanong section.
•UNIQ Engineering and Construction Public Company Limited is the contractor responsible for Contract 4, with a budget of 14,982 million THB.
•Deputy Minister of Transport Pattaraphong Phattharasith stated that initial inspections showed the situation was normal and controllable.
•The Ministry of Transport has instructed the Mass Rapid Transit Authority of Thailand (MRTA) and the contractor to continuously monitor the situation, assess it thoroughly, investigate the cause, and implement rapid solutions to prevent impact on the tunnel structure, public safety, and the project schedule.

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Key Quotes

Pattaraphong Phattharasith

"Initial inspections indicate the situation is currently normal and controllable."

จากการตรวจสอบเบื้องต้น สถานการณ์ยังอยู่ในภาวะปกติและสามารถควบคุมได้

Key Entities

Place

Blue Line MRT Tunnel(อุโมงค์รถไฟฟ้าสีม่วงใต้)

The under-construction tunnel segment of the Blue Line MRT project where a water leak occurred.

Wongwian Yai Station(สถานีวงเวียนใหญ่)

A station on the Blue Line MRT project near which a water leak occurred in the tunnel.

Person

Prime Minister Anutin Charnvirakul and Piphat Ratchakitprakarn(นายกฯ-พิพัฒน์)

High-ranking government officials who inspected the water leakage incident at the Blue Line MRT tunnel.

Phiphat Ratchakitprakarn(พิพัฒน์ รัชกิจประการ)ℹ️

Deputy Prime Minister and Minister of Transport who inspected the water leakage incident at the Blue Line MRT tunnel.

Siripong Angkasakulkiat(นายสิริพงศ์ อังคสกุลเกียรติ)

Deputy Minister of Transport who accompanied the inspection of the water leakage incident at the Blue Line MRT tunnel.

Pattaraphong Phattharasith(นายภัทรพงศ์ ภัทรประสิทธิ์)

Deputy Minister of Transport who commented on the controlled status of the water leakage incident at the Blue Line MRT tunnel.

Anutin Charnvirakul(นายอนุทิน ชาญวีรกุล)ℹ️

Prime Minister who inspected the water leakage incident at the Blue Line MRT tunnel.

Organization

Mass Rapid Transit Authority of Thailand (MRTA)(การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย (รฟม.))

The state enterprise responsible for overseeing Thailand's mass transit systems, involved in the Blue Line MRT project and its response to the water leak.

UNIQ Engineering and Construction Public Company Limited (UNIQ)(บริษัท ยูนิค เอ็นจิเนียริ่ง แอนด์ คอนสตรัคชั่น จำกัด (มหาชน) (UNIQ))

The contractor responsible for Contract 4 of the Blue Line MRT project, which experienced a water leak.

Law

Contract 4, Phra Phutthayotfa Bridge – Dao Khanong section(สัญญาที่ 4 ช่วงสะพานพุทธ–ดาวคะนอง)

The specific construction contract for part of the Blue Line MRT project where the water leak occurred.