Now...when you say "bridge," what are you referring to?
If you're referring to an actual BRIDGE, all the important questions have to come up:
How high is the bridge from the water?
How deep is the water at the 'jump point?'
Does the water level change appreciably due to weather conditions?
Have you checked out where you will be jumping for under-the-surface rocks, and/or submerged garbage (metal, glass, etc.)?
Have you cleared the site and event with local law enforcement?
Have you tried out the escape on dry land, and in shallower water with shorter jumps?
Are you ready to accept the possibility that your health insurance might cancel your coverage, if you get injured, for engaging in 'reckless behavior?'
VERY good questions to consider. Definitely check with your local police force, as bridge jumping is illegal in most states. ?It could land you in jail and fined.