Repairing the foundation and road surface of sections Km0+560÷Km1+150; Km1+450÷Km1+512; Km1+700÷Km1+875; Km4 ÷ Km4+995; Km5+450÷Km5+548; Km10+200÷Km10+698; Km19+103÷Km19+550; Km24+961÷Km25+094; Local repair of cement concrete pavement at sections Km10+700÷Km11+200; Km11+400÷Km12; Km12+700 ÷ Km12+800; Km13+500÷Km14+500; Repair and improve sidewalks at Km21+550 ÷ Km21 +650; Repairing the drainage system (trenches along local sections Km1+400÷Km5+500, Km10+200÷Km17+800) and repairing and improving the traffic safety system (signs, turn direction signs, spherical mirrors , painted heart,...), National Highway 14D, Quang Nam province