Determining the cause of landslides on the Vinh Hao - Phan Thiet expressway slope

On the morning of September 19, Project Management Board 7 (Ministry of Construction) said that through a survey, it was initially determined that the cause of the landslide and the exposed edge of the Vinh Hao - Phan Thiet expressway was due to the removal of the barrier to drain water on the road surface...

Vinh Hao - Phan Thiet Expressway, section passing through the slope landslide and roadbed landslide

Accordingly, after previous heavy rains with unusually high rainfall, maintenance units conducted a site inspection and discovered stagnant water on the side of the road (with water barriers).

Motor vehicles were mobilized to landslide sites to carry out reinforcement.

To ensure traffic safety, the relevant unit cleared the flow by chiseling a short section of the barrier to drain water. This is the cause of local erosion and gaping at the foot of the guardrail columns. The damaged locations are mainly in the section passing through Ham Liem commune, concentrated in some areas at the routes Km213 - Km214 and some other local locations from Km206 - Km207.

Slope roof, highway edge after being reinforced

In order to ensure safety of the entire route, Project Management Board 7 has assigned permanent staff to the scene, actively coordinating with agencies and units managing the expressway to handle damaged locations, ensure traffic safety of the expressway, reinforce locations at risk of landslides and open spaces, and at the same time review and build water barriers to direct water to the reinforced water collection location.

The highway water break has been rebuilt.

High speed water intake trough

The Vinh Hao - Phan Thiet section investment project was handed over and put into operation in May 2023. During the peak of the rainy season in 2025, especially in the early months of September until now, Project Management Board 7 recorded 11 days of prolonged heavy rain, some days recorded rainfall of over 150mm/day. The total accumulated rainfall in the first 15 days of September was 1,250mm, a sudden increase compared to previous years, compared to the same period the rainfall was 706mm, 544mm higher.

Source: https://baolamdong.vn/xac-dinh-nguyen-nhan-sat-truot-taluy-cao-toc-vinh-hao-phan-thiet-392162.html