Detailed text transcripts for TV channel - KPIX - 20110515:01:05:00
Guard may have to shut down shipping traffic on the river. with 12,000 ships carrying 500 million tons of cargo annually and 700,000 cruise passengers, new orleans is one of the busiest ports. closing the mississippi would be costly. >> every day that this river is closed, it's detrimental economic consequence not to new orleans but to the entire united states. it's $295 million a day, and it grows exponentially after the fourth day. >> reporter: the mississippi was last closed in 2008 when a fuel barge and a tanker collided, spilling more than 400,000 gallons of fuel into the water. that cost...