Perbandingan Metode International Roughness Index (IRI) dan Surface Distress Index (SDI) Terhadap Kerusakan Jalan (Studi Kasus: Sp. Panam ??? Sp. Air Hitam Pekanbaru). (2025). SAINSTEK, 13(1), 1-9. https://doi.org/10.35583/js.v13i1.264