What you describe is not bridging, it's paralleling. Aside from some MacIntosh models and a Bryston factory option, most SS manufacturers don't advise this.
Can you bridge any 2 channel amp?
In the risk of sounding dumb, can you bridge any 2 channel amp? Can you not just twist the pair of negative outputs together and then the positive outputs together and then plug them into your speaker? I'm pretty sure you can't but I thought I'd ask the experts!