Prenn Pass, the primary road connecting National Highway 20 to downtown Da Lat, has reopened under a temporary time-based traffic schedule following a landslide incident. The reopening, which began on the morning of December 5, excludes trucks and will be in effect for three days.

Đèo Prenn ra vào Đà Lạt tạm thời lưu thông trở lại theo giờ sau sự cố sạt lở..jpg

Construction crew cleaning the surface of Prenn Pass in the landslide area before reopening. Photo: D.L

According to Lam Dong Province’s Department of Construction, vehicles and pedestrians (excluding trucks) are now allowed to pass through the route at regulated hours: from 9:00 a.m. to 10:00 p.m. on December 5, and from 5:00 a.m. to 10:00 p.m. on December 6 and 7.

Outside of these designated windows, vehicles are required to follow the alternative routes laid out in the province’s previous traffic plan to ensure public safety during the ongoing repair of the landslide-damaged section of the road.

There are three suggested detours for vehicles traveling in and out of Da Lat:

The Mimosa Pass route allows all types of vehicles to travel in both directions.

The route via Tuyen Lam Lake (Sacom–Tuyen Lam Pass) is open to all vehicles except trucks. Drivers from the Lien Khuong Expressway should turn left into Sacom–Tuyen Lam Road to enter the city center and vice versa.

The Ta Nung Pass (Provincial Road 725) is open to two-way traffic for all types of vehicles.

Đèo Prenn ra vào Đà Lạt tạm thời lưu thông trở lại theo giờ sau sự cố sạt lở.jpg
Landslide site on Prenn Pass as seen around noon on December 4. Photo: Lam Dong Province Portal

The landslide occurred around noon on December 4 after prolonged heavy rain triggered a slope failure between Km224+600 and Km224+700 of the pass. Soil and rocks tumbled down the mountainside, completely covering the roadway and causing serious traffic congestion.

Authorities swiftly closed the area to all traffic, allowing emergency crews to begin clearing debris and stabilizing the slope.

Stretching 7.4 kilometers, Prenn Pass connects National Highway 20 with Da Lat’s city center. It underwent a major upgrade costing approximately 552 billion VND (about 22.8 million USD) and reopened in early 2023.

Recent days of intense rainfall have also caused landslides on several other key routes leading into Da Lat, disrupting traffic and posing risks to commuters.

Quang Hung