US Highway 59 was closed on the Arkansas River south of Sollisaw due to the collision. The causes of the accident are currently unknown.
Only last Tuesday, a merchant ship crashed into the Francis Scott Key Bridge in Baltimore, causing it to collapse. In the same Arkansas River, also in Oklahoma, 14 people died and eleven were injured when another bridge collapsed, causing ten vehicles to fall into the water. In that case it was an illness on the part of the tugboat captain that caused the accident.