What do you call these corridors that link two buildings? Is there a name for it? I am wondering if it's just called a bridge or if there's a specific name to these types of corridors.
That could be called a "skyway". Wikipedia says:
A skyway, skybridge, or skywalk is a type of pedway consisting of an enclosed or covered footbridge between two or more buildings in an urban area.
I found that word by typing "bridge between two buildings" into a search engine.