There was no flooding at the Convention Center. The whole downtown area was completely clear of flooding. Do you realize that the bridge is at least 10 miles long, that they would have had to walk for several more miles to reach a relatively unpopulated area? This relatiely unpopulated area has no were near the available supplies within one mile of the convention center. There were 100 buses at the Dome and Convention center. 160 buses within a mile that were completely drivable (1 foot of water).
They had hundreds upon hundreds of nearby buildings that had supplies. If they couldn't find the supplies in these building how were they to find them 50 miles away in a small town?
Admit it, you're just making this stuff up as you go along. The Crescent City Connection Bridge is 1576 feet long.
Really? I suggest that you take a look at the photo series posted by mosquitobite above:
http://www.kodakgallery.com/Slideshow.jsp?mode=fromshare&Uc=14ewb3ap.b147fdut&Uy=nyvoby&Ux=1