Abstract
Under the tight financial condition of each local government, public investment including investment in bridge maintenance is continuously reduced. Since preventive maintenance is the optimum policy from the viewpoint of LCC, the present successive reductions cause concern for inevitable huge future expenses. In this study, future BHI under several secular scenarios of public investment are investigated. The difference in the time values due to the vehicle kinds are also considered. The yearly investment, by which the total investment in the project year can be minimized under various levels based on BHI, was calculated to study the possible optimum investment scenarios for maintaining a healthy condition.
