Analysis of Traffic Growth on the Age of the Plan and Design of Improvement of Dupak Road in Surabaya City

Abstract

The 1,883-meter-long section of Jalan Dupak Surabaya, from the toll exit to Pasar Turi, consists of rigid pavement (STA 0+000–0+933) built in 2023, and flexible pavement (STA 0+933–1+883) which is currently cracked and collapsed. This study aims to analyze the average daily traffic volume (LHR) in 2023 and 2025 to obtain the traffic growth rate that affects the life of the rigid pavement plan for 40 years. This section is a primary arterial road with heavy traffic from various types of vehicles. The method used in this study is to use the road pavement design manual method (MDPJ) in 2024, analysis of Average Daily Traffic (LHR) data, calculation of the Number of Commercial Vehicle Axis Groups (JSKN),. In addition, a rigid pavement structure design was also carried out that took into account the condition of the underground soil and the projected traffic load during the 40-year life of the road plan. The results of the study show that the traffic growth rate of 5.6% per year has an impact on reducing the life of the road pavement plan. From the results of the analysis, it was found that the life of the road plan decreased by 2.05 years from the total plan life of 40 years, leaving the effective life of the plan of 37.85 years. Based on these conditions, a rigid pavement structure design plan was carried out that was adjusted to traffic load and soil conditions. The final design shows the need for a concrete slab with a thickness of 300 mm, which is supported by a bottom foundation in the form of thin concrete 150 mm thick.