Hundreds of landslides cut off traffic, Lam Dong urgently deploys solutions

According to a report by the Lam Dong Provincial People's Committee, the entire province recorded over 186 landslides, especially the gateway roads to Da Lat are facing the risk of traffic insecurity due to many mountain passes being cut off.

A series of serious landslides on key mountain passes such as Khanh Le, Prenn, D'ran, Mimosa... disrupted traffic and posed many potential safety risks.

At Prenn Pass on National Highway 20 - the main gateway connecting Da Lat, a negative slope landslide caused the collapse of half of the roadbed on November 17, 2025, paralyzing traffic on the route. Lam Dong Provincial People's Committee issued Decision No. 2193/QD-UBND, declaring a natural disaster emergency for the section Km224+600 - Km224+700 to respond.

Receiving a request from the Traffic Project Management Board No. 1 of Lam Dong province, Deo Ca Construction Joint Stock Company (DCC) invited leading experts to survey and assess the level of landslides to have a plan to support handling and remediation.

According to initial assessment, the continuous and prolonged heavy rain with large concentrated water flow has caused erosion of the retaining wall foundation, collapsed the retaining wall and cut off nearly half of the road surface of Prenn Pass at Km224+650. This is a steep terrain location, complex geological foundation and is at continued risk of landslides due to the continued bad weather.

At the technical meeting after the survey, DCC agreed to support the province with urgent tasks including erecting fences, traffic safety warning signs, and driving steel sheet piles over dangerous landslide points to create temporary traffic areas. At the same time, the unit coordinated traffic regulation, surveyed and developed a long-term stable design plan for Lam Dong province's authorities to consider and implement.

On November 19, 2025, DCC completed the technical plan and mobilized personnel and equipment to the site, organizing construction day and night. Mr. Pham Van Hung - General Director of DCC said that the most important and urgent goal is to open the route to serve the people, regardless of the cost.

Overnight work to handle landslides on Prenn Pass

On November 24, the work of pile driving, fences and sign installation was completed and the working group of Lam Dong province inspected and agreed to allow vehicles to circulate again on Prenn Pass on the afternoon of November 25, except for trucks which will continue to be restricted to ensure safety while the incident is being resolved.

“ Following the direction of Deputy Prime Minister Ho Quoc Dung, the Government requested Deo Ca Group to support the locality to quickly fix the landslides as quickly as possible. Engineers and workers stayed at the scene, working day and night to complete the pile driving and erect the system of barriers and warning signs , making every effort to serve the traffic ,” said Mr. Hung.

Lam Dong province still has two landslide locations on Mimosa Pass and D'ran Pass on National Highway 20. The point on Mimosa Pass is expected to reopen to traffic on November 30. Currently, the locality has organized traffic flow and traffic organization along National Highway 20, National Highway 27 and Provincial Road 725. The landslide point on D'ran Pass is also expected to reopen to traffic on November 25.

There are also some traffic jams in Lac Duong commune and Lam Vien ward on Highway 27C. The road is expected to be open to traffic on November 25.

Previously, on November 21, Deputy Prime Minister Ho Quoc Dung also directly inspected the scene at Prenn and Mimosa passes and requested the authorities and contractors to mobilize maximum forces and equipment to ensure safe route clearance as soon as possible.

The Deputy Prime Minister emphasized that troubleshooting and traffic restoration is the top priority, especially in the context of Da Lat entering the peak tourist season at the end of the year.

Prolonged heavy rains caused landslides on many mountain passes connecting Lam Dong, at times completely cutting off the area. The province's declaration of an emergency situation and the urgent support from Deo Ca and other units are necessary solutions to ensure traffic, people's safety and maintain local socio-economic activities.

The Prenn Pass upgrade and expansion project started construction on February 10, 2023, and by January 2024, the section from Datanla waterfall to the end of the route was opened to traffic, putting the route into operation and use. On July 26, 2024, the Investor accepted the completion of the project and the Department of Transport of Lam Dong province (now the Department of Construction) approved the results of the acceptance of completion and put the project into operation and use in Notice No. 659/TB-SGTVT dated September 30, 2024. According to the contract signed between the Investor and the construction contractor, the warranty period is 12 months, the warranty period expires on July 26, 2025. In the working minutes dated November 18, 2025 between the Department of Construction of Lam Dong province, Construction Investment Project Management Board No. 1, the construction contractor consortium, and the design consultant, the parties agreed that the warranty period would expire on July 26, 2025.

Source: https://baophapluat.vn/hang-tram-diem-sat-lo-chia-cat-giao-thong-lam-dong-gap-rut-trien-khai-khac-phuc.html