I have done such repairs and therefore can give a huge +1 for:
Originally Posted by Pilgrim
A replacement bridge would probably cost less than labor to (possibly unsuccessfully) fix the existing one.
Except for my repairs has been succesful (but ugly
But then again, I have several lathes and milling machines to aid in the fabrication.
With all setting up, it'll take about an hour to measure and fabricate the part, so ~$100 or so.
A simple stepped spacing ferrule can be ground freehand with an angle grinder as well, but the fingers are at a grave risk.
Welding is virtually impossible because of the Zinc alloy used. Brazing is possible in theory, but will lead to more troubles with the finish melting/scaling away, and quite likely the whole bridge bending badly.