The Chi Thanh–Van Phong Expressway, with a total investment of VND11 trillion ($417.7 million), starts at the Chi Thanh interchange in Tuy An Bac commune, connecting to the Quy Nhon–Chi Thanh Expressway, and ends at the National Highway 1 interchange in Hoa Xuan commune, linking to the northern portal of the Deo Ca tunnel and the Van Phong–Nha Trang Expressway.
Construction began in early 2023 and was scheduled for completion on Dec. 19, 2025. However, the project cannot meet the original deadline after floods in November, the worst in south central Vietnam in 50 years, caused landslides and structural breaks on several sections of the road surface.
Cracks more than 30 centimeters wide have split across the expressway, which is over 17 meters wide.
According to Project Management Unit 7 under the Ministry of Construction, heavy rain combined with historic flooding saturated the soil, triggering landslides along about 500 meters of the expressway through O Loan and Tuy An Nam communes.
Guardrails, traffic signs and drainage structures have cracked, shifted and in some cases been dislodged from their foundations.
One section of the expressway has been severely deformed and subsided.
Project Management Unit 7 has instructed contractors to urgently implement remedial measures. About 600,000 cubic meters of landslide debris at the border area between O Loan and Tuy An Nam communes will be excavated and removed, while the entire roadbed and pavement of the main route will be rebuilt and treated.
In recent days, technical teams from the Ministry of Construction have surveyed the site and installed warning signs for construction vehicles at the project. The cracked area has been assessed as having complex geological conditions.
To address the incident, contractors are drilling geological survey boreholes on the mountainside to propose long-term stabilization solutions, while clearing landslide debris to reduce load and prevent further impact on the roadbed.
The Chi Thanh–Van Phong Expressway has now reached more than 90% completion. The route currently has four lanes, a width of 17 meters, emergency stopping areas every 4–5 kilometers, and a design speed of 80–90 kph. In the full build-out phase, it will be expanded to six lanes with two emergency lanes, a design speed of 120 kph, and 100 kph on more challenging terrain sections.
Project Management Unit 7 is mobilizing maximum manpower and equipment and organizing multiple construction fronts, aiming to basically resolve the incident before Dec. 31 and open the expressway to traffic before Jan. 31, 2026.
