My brother Russ was waiting for us where southbound traffic on the ICW on Sisters Creek empties into St Johns River as we passed into our hailing port!Jacksonville’s key bridges (two of many) if going “up” St Johns River… which mainly flows from south to north!Fortunately, this CSX Railroad bridge is normally open to boat traffic, as only the smallest of boats can pass when it is closed. (FL bridges monitor VHF-09).