But, if the question in the OP was referring to taking the "bounce" out of framed span, the answer is pretty much no. Although bridging and blocking will perform such as to make the joists under a local live load react in similar fashion, not racking or twisting, they will still deflect, although somewhat less than they would individually. They'll react a little more in concert with each other. But, if they're not designed adequately to make the span, they'll still move up & down (bounce), and blocking or bridging won't make a significant difference.
[This message has been edited by treebeard (edited February 23, 2003).]