The project of repairing road surface damage and completing the traffic safety system of Km1+800 - Km2+080; Km22+580 - Km24+00; Km24+900 - Km26; Km44+950 - Km45+150; Km48+00 - Km48+200 and repaired Thach Son bridge expansion; Repair of bridge pillars, girder girder Cua Nhuong, QL.15B, Ha Tinh province