Bridge Pickup on Gibson SG Classic Not Working

I was playing my guitar today and everything sounded great, both P-90 pickups on my SG Classic were great. The bridge pickup (which I use the most) was giving off the great tone it always does. I put the guitar down for a few minutes, then came back, and when I tried to play with just the bridge pickup, I got no sound. The neck pickup sounds great, still working, but the bridge has shorted out for no apparent reason. Any idea what could be wrong/how to fix it?

Alot Of Times Its Dust In The Switching System
If You Have Not Cleaned It With Electrical Or Compressed Air Id Do So
And Switching It Back And Forth Will Certainly
Clean Any Dust / Dirt / Ect Off The System

Sometimes It Needs To Be Done a Couple Times
Ive Never Had a Pickup Go Out On Me
That Has Been Cared For
Hope This Helps

Ps Im Sure You Care For Your Guitars
But Fact Is Its Maintaince