|Title:||Life Cycle Cost Analysis for Road Maintenance Interventions (A case Study for Alemgena District)|
|???metadata.dc.contributor.*???:||Alemayehu Ambo (PhD)|
|Keywords:||Life-Cycle Cost Analysis;Road Maintenance Interventions;Evaluation Parameters|
|Abstract:||The main purpose of this study was to conduct the life-cycle cost analysis of road maintenance interventions undertaken by the Ethiopian Roads Authority (ERA), considering the Alemgena Road Maintenance District as a case study. In order to meet the objectives of the study, a case study was considered accounting for both quantitative and qualitative data. The road condition survey data were collected from ERA’s Alemgena Road Maintenance District/(ARMD). From the five (5) road maintenance sections ten, (10) paved roads were selected for investigation and analysis. The collected data were entered into the Highway Development and Management Model (HDM-4) and life-cycle cost analysis (LCCA) was carried out to determine the economic viability of different road maintenance interventions. The roads conditions considered in the study ranges from poor to fair. The existing conditions of the roads help to determine the kinds of maintenance / improvements requirements. All possible input data were collected and entered into HDM-4. The LCCA was conducted for 20 years with additional one year of intervention period. The analyses were carried out with consideration of with and without improvement cases. The results indicated that the proposed interventions were economically viable fulfilling the requirements, with the net present values (NPVs) of well over zero, economic internal rates of return (EIRRs) of greater than the opportunity cost of capital, which was (10%), and benefit-cost ratios (B-CRs) of greater than one. This tells us that consideration of all costs and benefits during the lifetime of the projects give better decision for proposed interventions alternatives. In terms of budget, the 20 years’ analysis period was considered in this investigation. The total lifetime cost of maintenance activities currently applied by ERA is much higher than the proposed maintenance interventions and it is not economically optimum therefore, based on the findings, workable recommendations and the need for further research were forwarded.|
|Appears in Collections:||Thesis - Road and Transport Engineering|
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