This thesis assesses the development of a new live load model for Ethiopian bridges thatrnreflects the actual developments of the growing traffic. To have a clear idea of thernresearch idea different countries' experiences and models were explored to have the bestrnbenchmark practice that helps to replicate to our context.rnThe subject of interest of this paper is to explore the existing traffic loading model inrnEthiopia and have contributed to its role in identifying the strength and weaknesses ofrnthis model. A Quantitative research design used to be applied for the study and effortsrnwere made to use data from Static Weighing Stations obtained from the Ethiopian RoadsrnAuthority from three sites, which consists of 35,000 truck loading data in total. Arnsimulation program was developed for the calculation of static load effects for simplyrnsupported bridges spanning up to 50m. Extreme 75-year loads obtained using differentrnstatistical extrapolation methods and the data was used to compare the loading effectsrngenerated from the actual trucks with the loading effects of the trucks used in thernEthiopian Bridge Design Manual. The result shows that the traffic loading effectsrnobtained from the analysis vary from the currently adopted practice of the Ethiopianrnbridge design manual that demands to increase either the design load or the factor ofrnsafeties indicating the need for further research to reflect the existing reality.