A bridge collapsed and a bus was swept away by flooding Monday as more rain fell on northern Vietnam from a former typhoon that has caused at least 59 deaths in the Southeast Asian country, state media reported. Nine people died during the typhoon, which made landfall in Vietnam on Saturday before weakening into a depression, and 50 others were killed during the consequent floods and landslides. The water levels of several rivers in northern Vietnam were dangerously high. A passenger bus carrying 20 people was swept into a flooded stream by a landslide in mountainous Cao Bang province Monday m…