At Prenn Pass, a main gateway to Dalat, crews are clearing loose soil and reinforcing slopes to reduce landslide risks before heavy rains.
Similar inspections and reinforcement work are under way along National Highways 20, 27, 28 and 28B, as well as at D'Ran, Gia Bac and Song Pha passes.
According to Lam Dong police, the province has identified 505 disaster-prone locations, including 127 flood-prone areas and 378 sites at risk of landslides or ground subsidence.
Authorities are also carrying out emergency landslide mitigation works on National Highway 28 through Gia Bac Pass, with an investment of about VND 70 billion (USD 2.67 million) to ensure safe travel during the rainy season.
Following severe damage caused by last year's rainy season, the province has shifted its disaster management strategy from emergency response to prevention.
The provincial hydrometeorological station forecast more localised heavy rain, thunderstorms and possible impacts from tropical storms in the East Sea during July, increasing the risk of flash floods and landslides.
Earlier this month, the Lam Dong Department of Construction issued a disaster response plan for the transport network, requiring agencies to monitor weather conditions, prepare emergency resources and divert traffic where necessary.
Local authorities have also been instructed to review communities in landslide-prone areas, update evacuation lists and prepare to relocate residents if conditions deteriorate.
By mid-July, mitigation work at Prenn, Mimosa and Gia Bac passes, as well as along National Highway 27C, had been largely completed.
Standing Vice Chairman of the Lam Dong People's Committee Le Trong Yen urged authorities to complete the remaining landslide prevention works, keep transport routes open and remain vigilant during the peak rainy season.
He said protecting lives, property and livelihoods remained the province's top priority, with the focus on preventing disasters and minimising losses.