Personally, as command, I just fully ignore bridge hobos, they annoy me endlessly. I want to see people walking up and down the hallway but I sometimes just use the shutters so I don't have to see minibar #39851 being built in the middle of a main corridor.
As for the phenomenon itself, I think we have bridge hobos because a lot of people love to see the security vs antagonists gameplay in person (and sometimes try to get involved as well, breaching our validhunting rule), and the best places to experience that are 1) the Bridge that is always a hotspot for both RP drama and mechanical conflict and 2) medbay.
I think a solution for bridge hobos would be making the bar/other recreational areas more mechanically interesting. Henri's NT recruitment arcade game, for example, lured a lot of people into the arcade / made them install new machines around the station. Some people know how to use cards well and host blackjack games in the bar. We need more of these, and then, I think, people will be less likely to gawk at command, waiting for the free circus, and instead they'd go and make their own fun.