Supplementing the project contractor selection plan: Repairing damage to the foundation, road surface, drainage works and traffic safety system of sections Km200+300 – Km204+163, Km207+463 – Km211+00; Repair of bridge deck and expansion joints of Huoi Chan bridge Km164+111; Su Lu bridge km246+400; Huoi Long bridge Km261+900; Ban Keo bridge Km276+110, National Highway 12, Dien Bien province