They keep saying that they are only blowing up the largest underwater pier, not the bridge.
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The target is a piling from the old Bay Bridge that extends 275 feet beneath the surface into the bay mud itself.
Maroney got fairly animated on the subject. "We see that we have a cellular structure that goes down hundreds of feet, so let's place that material right there, efficiently, and entomb it below the mud line, where it is not a hazard to anybody," he said."
See more here with good maps etc:
http://abc7news.co...il-nov-14/1066483/ You might not see much of anything.