Repairing drainage system along sections Km2043+150 - Km2043+770 (P), Km2045+000 - Km2045+820 (T), Km2048+950 - Km2049+180 (P), Km2052+740 - Km2053+120 (P), Km2056+000 - Km2057+010 (T), Km2055+800 - Km2057+010 (P), National Highway 1, Vinh Long province