Yeah, we were talking about this a bit. It started to sound like two issues, since the wireless bridge isn't passing traffic, and the server doesn't see the local network.
Running a wire will be ideal, but it's a longish distance. Ethernet can go something like 300 feet, and it's probably close to that. Anecdotally I hear you can go slightly past that distance. Of course there's always the possibility of using a cheap switch as a repeater, somewhere in between.
To just get things running again, it might take a new bridge, but that might not get the server happy again.