 as well as most of the 50,000 tons of wreckage that fell into the Patapsco River that early morning. But parts of the bridge still need to be taken apart before construction on a new span can begin. WTLP's Luke Lukert has that. The several hundred feet of concrete ramp on either side of the Patapsco River will need to come down. The Baltimore Sun reports that the small concrete islands nicknamed Dolphins will also be destroyed to make way for the new bridge.