Repairing Dai An bridge expansion slot KM152+470; Repairing bundles of segments Km152+480 - Km153+300 (T, P), Km166+320 - Km166+640 (T, P); Repair of drainage system along the segments of km153+300 - km155+220 (T, P), Km165+700 - Km166+780 (T, P); Repair background, road surface and traffic safety system of segments Km163+600 - Km164+800, Km165+800 - Km166+858, Highway 53, Tra Vinh Province