Are we talking about an inverted U-tube here? The ions are all there in solution, isolated ones like as Zn2+ or Cl- and SO42-, so yes, you will find Zn2+ and Cl- and SO42- and K+ ions in the salt bridge. By the way, I'm trying to eat baked beans and toast while typing this and it's a bit messy so if my thoughts are a bit messy, apologies.