Abstract: In order to develop the sustainability of bridge engineering design in many design offices of underdeveloped countries, this work outlines design guidelines by examining the behavior of bridges vertical displacement in relation to several parameters such as the moving speed, the track irregularities, the span-length, the elasticity modulus, the cross-section geometry and the material damping. A simply supported Euler-Bernoulli bridge-beam model coupled to a multiple moving point loading under different conditions is developed based on the Hooke’s law, the Navier’s hypothesis and the Saint-Venant’s principle. Obtained results give a deeper understanding on the influence of these parameters in the initial design, and show that the use of a single dynamic magnification factor alone, for different bridge parameters, is not technically optimal for an improved dynamic analysis of existing and under-design bridges, and that local Design Bureau should implement a more sustainable design methodology to tackle uncertainties in bridge behavioral responses for its wider understanding.