The railway tunnel through Ru Ri Pass, located on the Hanoi – Ho Chi Minh City railway line (from Km1305+950 to Km1306+481 in Vinh Luong Commune, Nha Trang City), was constructed in 1935. After many years of operation, the tunnel has significantly deteriorated, particularly the slopes at both tunnel portals where heavily weathered geological conditions pose serious safety risks.

Each year, the Ru Ri Pass tunnel area experiences at least two to three landslides and rockfalls, affecting railway traffic safety and disrupting train operations. The northern side of the tunnel, with its particularly complex terrain, is highly prone to recurring slope failures and has long been a major concern for the railway sector during the rainy and storm seasons. To address these issues, Regional Railway Management Division No. 1 under Vietnam Railways Corporation selected a slope stablization solution using high-strength steel mesh systems combined with Hr30 shear connectors and polymer-based triaxial geogrids for erosion control. Vinh Hung was honored to be selected as the main contractor for this project.

This project marks the first collaboration between Vietnam Railways Corporation and Vinh Hung Trading, Consultancy and Construction JSC. Construction commenced on August 4, 2024 and is scheduled for completion and handover on October 30, 2024.