Then there's 10 EAST. As far as I know, Slidell didn't close THAT bridge down, either.
And lastly, There's 10 WEST. There IS no bridge before you get to 51 North, so I ain't sure what your problem is.
GRETNA evacuated ALL of her citizens, and the cops just made sure no one headed SOUTH to loot the empty city..
You can't shut down an evacuation route...that is criminal.
That guy should be drawn and quartered.