It can not unless the bridge already has a lot of weight on it and the cat would put the bridge over the maximum amount of weight that the bridge can withstand.
forcea
Sharing will cause the bridge to collapse.
Collapse of Jiujiang Bridge happened in 2007.
Collapse of Can Tho Bridge happened in 2007.
Maccabiah bridge collapse happened in 1997.
Glanrhyd Bridge collapse happened on 1987-10-19.
Wootton bridge collapse happened on 1861-06-11.
A column of soldiers will never march across a bridge for this reason. The steady oscillation that occurs can, over time cause structural issues with even a well built bridge. It may not actually collapse (although not out of the question) but it can cause serious damage if the marching approaches the resonant frequency. The classic example of resonant frequency that every engineer has had to watch the video of is the Tacoma narrows bridge. There are also many examples that Tesla explained on this subject.
Minneapolis.
It will collapse
nope
Sultan Abdul Halim ferry terminal bridge collapse happened in 1988.