Repair of the National Highway 53 drainage system, including sections: Km2+000 – Km2+300 (T), Km2+300 – Km2+500(T,P), Km2+500 – Km2+720 (T), Km3+285 – Km3+420 (P), and Km3+285 – Km3+660 (T); Repair of the Tân Hữu bridge embankment on National Highway 53, Vĩnh Long province.