Table 1: Modal frequencies of vibration of the Adolphe Bridge for the three components of motion. The values assembled in this table are also indicated in Figure 6(b) as black dashed lines.

Mode I translat. (T–dir.) f (Hz)Mode II rocking (V-L–dir.) f (Hz)Mode III translat. (T–dir.) f (Hz)Mode IV translat. (V–dir.) f (Hz)Mode V rocking (V-L–dir.) f (Hz)Mode VI translat. (V–dir.) f (Hz)Mode VII translat. (T–dir.) f (Hz)