Road management authorities and maintenance units swiftly responded to incidents across central Vietnam, deploying warning signs and barriers in hazardous areas. They organized patrols and coordinated with traffic police to divert traffic, ensuring the safety of commuters. Machinery, equipment, and personnel were mobilized to promptly clear the earth and rocks that had slid onto the roads, gradually restoring traffic. All blocked locations were addressed, with at least one lane reopened to ensure traffic flow.

The adverse weather conditions, stemming from a tropical depression, led to significant road damage. On national route 18, at kilometer 28+387 (left side) in Chi Linh ward, Hai Phong city, a section of the road surface suffered a collapse approximately 0,8 m in diameter and 0,7 m deep around 20:00 on 13/9. Road Management Area I confirmed that the route management company fenced off the collapsed area, placed warning signs, and organized traffic diversion. Road Management Office I.4 is coordinating to inspect the site and develop a remediation plan to ensure traffic safety.

Quang Tri province reported four national routes affected by landslides. On national route 15D, approximately 30 m3 of earth and rocks slid from the uphill slope. Management units promptly addressed these locations, ensuring traffic flow. At kilometer 9+980, about 720 m3 of earth and rocks slid from the uphill slope, causing traffic congestion. Additionally, smaller scattered landslides totaling around 300 m3 occurred along the route.

National route 9 also experienced multiple landslides. Approximately 120 m3 of mud, earth, and rocks slid from the uphill slope at kilometer 53+800 (right side). Furthermore, mud, earth, and rock slides from the uphill slope were recorded at 8 other locations, with a total volume of 322 m3. The route also experienced a downhill slope landslide, extending approximately 5 m.

Landslide on national route 49 through Hue city. *Photo: Hue City Department of Construction*.

Other routes in the region also saw disruption. On national route 12C, approximately 100 m3 of mud, earth, and rocks slid from the uphill slope, while 32 m3 of mud and gravel filled drainage ditches. National route 12A reported mud and earth slides, filling drainage ditches, road foundations, and surfaces, with a total volume of about 200 m3. On national route 15, from Tan Ap to Dong Le, earth and rocks slid onto the roadway at 6 locations.

National route 1 through Thanh Hoa and Nghe An experienced localized flooding in the Truong Lam commune section on the morning of 14/9. The section through Hue city also saw several flooded areas, but traffic is currently flowing normally. According to Road Management Area II, the Ho Chi Minh trail west branch through Quang Tri province and Hue city recorded numerous uphill slope landslides, with earth, rocks, and mud spilling onto the road, causing traffic blockages in some areas.

Doan Loan