National Highway 7, which connects Vietnam’s National Highway 1A with National Highway 13 of the Lao People’s Democratic Republic, is an important East – West transport corridor crossing three major North – South transport routes, namely National Highway 1A, the Ho Chi Minh Highway, and National Highway 15A. It serves as a vital transportation artery leading to Nam Can Border Gate for trade with Laos and plays a significant role in national defense, security, and border protection.

Within this project, Vinh Hung supplied and directly installed the Mechanically Stabilized Earth (MSE) retaining wall solution at the railway overpass section between Km2 and Km2+800.