Do all packets go to all towers on a bridged network?

I have a bridged network, with individual backhauls to each tower. I have 2 subnets running, bridged, over this network. But I’m wondering, if packets going to a client at one tower, does that packet also get sent to the other towers as well? I’m using a 10/100 switch (not hub) on my main tower.

The reason I ask, is that I have a script that pings each client and tower IP address every 30 seconds, and I am concerned that maybe I am generating enough traffic that I am actually hurting my network more by monitoring it that way.

(1) In a bridged network network the only packets that will go everywhere are broadcast frames. This does not include your pings.

(2) Your pings are such a miniscule size that you would have to have an extremely slow link (32kbps?) to ever notice them.