Wouldn‘t it be possible to glue the bridge parts together?
Clevinger seems to made a lot of different bridges relating to where the piezos are. Also these bridges are very thick and have almost no feet.
If glueing (maybe with two dowels) is no option you might want to get a completely new bridge, maybe with different pickups. The electronics of my Clevinger were of a magnetic BG design and weren‘t good for piezos, so I buffered the piezo inputs.
I made my own piezos (good sound but very low output), covered them with wood and put them below the feet.
I needed to screw an angled piece of wood to the body, so the string angle was halved on both side to avoid a falling bridge.
Either find a luthier that can do what is needed or find a solution for yourself. I won’t count on Mr. Clevinger to repair or replace your bridge if he is not responsive. Maybe some of his former co-workers can help you if they aren’t retired too.
BTW, a picture of your broken bridge might be helpful for advice.