Construction cost effectiveness comparison on I-girder bridge and box culvert

Abstract

One of the most important aspects in bridge construction is cost. A study case has been carried out in Balikpapan-Samarinda highway STA 45+990.946. In that specific location, a bridge is needed as a local road. The ongoing project is constructing a 90 m long I-girder concrete bridge. In this research, as opposed to I-girder concrete bridge, box culvert is designed and then calculate the cost. The budget calculation for bridge construction costs refers to the Unit Price Analysis Guidelines (AHS) in the Public Works Sector and General Specifications. Under the AHS Guidelines, work items are divided into 10 job divisions. The recapitulation of the construction cost budget shows that box culvert construction costs are less than I-girderbridge. In earthworks and structural works, it is the most significant cost difference between box culvert and I-girder bridge. In earthworks, the costs required to the box culvert construction is higher than the I-girder bridge construction. Meanwhile, the construction cost of the box culvert in structural works is less than the I-girder bridge.