Planning for the Reconstruction of the Sari Wangi Road to Beringin Agung, Samboja District

Abstract

This study focuses on the reconstruction planning of Jalan Sari Wangi to Beringin Agung in Samboja District, East Kalimantan, which has become a vital access route for both local and industrial traffic. Increased vehicle volume and inadequate previous pavement have led to rapid road deterioration, highlighting the urgent need for structural improvement. The AASHTO 1993 method was employed to design a rigid pavement system capable of sustaining future traffic demands over a 21-year design life. Primary data, such as traffic volume surveys, and secondary data from government agencies, including soil characteristics and CBR values, were analyzed. The design resulted in a rigid pavement thickness of 32 cm supported by a 15 cm base layer. Reinforcement and joint designs, including dowels and tie bars, were specified to ensure structural integrity. The Degree of Saturation (DS) analysis confirmed that the proposed design will accommodate traffic until 2046, with DS values remaining below the critical threshold of 0.85. The estimated construction cost for the 336-meter road section is Rp 2.67 billion. This investment is considered economically feasible, given the expected improvement in road durability, serviceability, and contribution to regional connectivity and development. The study underscores the importance of adopting performance-based pavement design and integrating long-term planning with reliable forecasting models.