Cost Analysis of Construction Between Pre-Tensioned Girder Beams and Box Culverts in the Design of the Kedungpeluk Bridge

Abstract

The Kedungpeluk Bridge, located in Sidoarjo Regency, was constructed in 1984 and collapsed in 2024 due to age and structural damage. Initially, the bridge was designed using prestressed concrete beams; however, the design was later modified to a Box Culvert to expedite the construction process. This study aims to compare the efficiency of both designs in terms of cost and construction time. The data used in this analysis include project drawings, Cost Estimate (RAB), S-curve, progress reports, literature, and other secondary data. This study was conducted using a quantitative approach that compared the costs and time of both designs. The results showed that the construction cost of the Box Culvert design reached Rp 1,440,254,544.83, while the cost for prestressed concrete beams was Rp 1,912,436,195.15. These findings indicate that the Box Culvert design offers significant cost efficiency, which can positively contribute to budget allocation for regional infrastructure development. Based on the research findings, it is recommended that the Box Culvert design be considered as a more effective alternative in similar conditions, while still considering cost efficiency, implementation time, and the functional requirements of the project. These findings are expected to serve as a reference for the government and civil engineering practitioners in planning more optimal bridge infrastructure.