RedactedNarrative: Operator was operating a 23' sailboat, under power, on Lake Ponchartrain near the U.S. Highway 11 North draw. The lake was rough due to thunderstorms in the area. While navigating through the partially opened north draw, the sailboats mast and rigging became snagged on the unopened portion of the bridge. The mast then broke off the boat but the rigging held the vessel to the bridge. the vessel began taking on water. Operator was rescued from his vessel by USCG. The vessel then drifted westward into the lake. There were no injuries and alcohol/drug use is not suspected in the incident. PFD was used.