RedactedNarrative: UNIT 1 WAS TRAVELING NORTH ON THE ICW.  THE BEN SAWYER BRIDGE OPERATOR REQUESTED THAT UNIT 1 BACK AWAY FROM THE BRIDGE IN ORDER TO OPEN IT TO ALLOW UNIT 1 TO PASS.  UNIT 1 DID NOT GIVE ENOUGH ROOM AND WAS STRUCK IN THE MAST BY THE OPENING BRIDGE.  THE MAST COLLAPSED RESULTING IN NO INJURIES.