Can I redo my dental bridge before getting Invisalign, or do I have to get Invisalign first to straighten my teeth out?

Considering Invisalign I have a bridge that is permanent regarding a missing eyetooth. I am looking at redoing my bridge do the discoloration, however have developed a gap between the eyetooth in the front tooth and I'm wondering can I redo the bridge or do I have to have Invisalign first to straighten my teeth out? I am 62 years old.