National Road Network Services-Asset Preservation of National Roads-Rehabilitation/Reconstruction of National Roads with Slips, Slope Collapse and Landslides-Tertiary Roads-Ilocos Norte-Abra Road, K0530+100-K0530+148, K0530+450-K0530+479, K0530+520-K0530+527, K0530+774-K0530+800, K0532+015-K0532+026
