After a barge hit and collapsed an Oklahoma bridge a few days ago killing at least 14 people, an incident in eastern Iowa this week seems pretty tame, but it still caused concern. Mississippi River traffic in the Davenport area is back to normal again after some runaway barges crashed into the Crescent Railroad Bridge. Nine coal-filled barges broke away from a towboat late Wednesday afternoon and hit the bridge pilings. There were no injuries. Crews worked all day Thursday removing the barges. And Burlington Northern Santa Fe Railroad officials inspected the bridge and found no damage. The U.S. Coast Guard in conducting an investigation to see why the accident took place.