Analisis perbandingan metode SDI dan IRI dalam evaluasi kondisi jalan serta dampaknya terhadap biaya perawatan rutin jalan di ruas Jalan Provinsi Jawa Tengah Kabupaten Magelang

This study aims to analyze the comparison of stable and unstable road conditions based on Surface Distress Index (SDI) and International Roughness Index (IRI) Test results, the relationship between IRI values and the number of road damages, and the comparison of routine maintenance costs with IRI Test results on the BPJ Road Sections in Magelang Regency, Central Java. The data used includes the results of SDI and IRI measurements in 2025, monthly road damage data, and routine maintenance cost data. The analytical methods used are descriptive analysis, correlation, and simple regression. The results show that there are significant differences between road condition assessments using SDI and IRI on several road sections, where IRI tends to be more sensitive in detecting surface quality degradation. IRI values are positively correlated with the number of road damages occurring in one year. In addition, routine road maintenance costs also show a significant relationship with IRI conditions. The implementation of IRI as a payment reference in the 2025 Binamarga Specification can improve the effectiveness and accountability of post-construction road maintenance. It is recommended that the use of IRI be considered a primary indicator in road condition evaluation and maintenance budget planning.