The increasing vibration issues in footbridges highlight the need to consider dynamic behavior in their analysis, in addition to the static loads. This study ponders the vibration performance in the design of a footbridge. Initially, the natural frequencies and modal shapes of three-span footbridge model are identified. Accordingly, a comparison with critical frequency ranges is done. Moreover, design situations are assessed by defining traffic class and comfort level, including acceptable acceleration limits. Different pedestrian stream loads of walking, running and crowded situation are modelled to determine the maximum response acceleration on the deck numerically and compare it with the allowable values. The findings show that, for daily use, human-induced vibrations stay within acceptable acceleration limits for the case study footbridge. This aligns with the design situation set by the owner. Lastly, a sensitivity analysis evaluates the effect of light and heavy concrete deck on the response acceleration due to pedestrian-induced vibrations. It also evaluates how increasing the number of people on the footbridge affects the vibration response.