Any car stereo system gurus here?

Channel 1 of my 4 channel amp that powers my 4 door speakers does not work. I want to know if I can bridge them somehow to where 2 door speakers are powered by 1 channel and the other 2 door speakers are powered by another- leaving one good channel and the bad channel free.

The amp is bridgeable, but I've only seen people bridge with subs. (Because why else would anyone bridge 4 door speakers on a 4 channel amp? Unless, that is, if one channel no longer works)

Any help would be greatly appreciated!