<![CDATA[Steel truss bridges are one type of structure that is widely used because they have high strength, relatively light weight, and ease in the construction process. However, their lightweight characteristics make this structure more sensitive to the influence of dynamic loads, especially traffic loads that can trigger repetitive vibrations. This study aims to analyze the natural frequency and dynamic load frequency values on steel truss bridges using a numerical analysis approach based on SAP2000 software. The numerical model is compiled based on primary and secondary data of the actual condition of the bridge. Modal analysis is carried out to obtain the natural frequency of the structure, while dynamic loading analysis is used to determine the external frequency generated by vehicle loads. The results show that the natural frequency of the first mode of the bridge is 3.2 Hz, while the dynamic load frequency is 5.5 Hz. The frequency ratio value obtained is 1.7, far outside the critical resonance range (0.9–1.1), so it can be concluded that the bridge is in a safe condition from potential resonance.]]>
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