Unfortunately, while many things have improved, that has not. It is still a very dangerous city and neighborhoods transition very quickly from less dangerous to more dangerous, often within the same block. I would advise against ever walking alone at night.
Well yes, it's a major city, of course there are some shady spots (to say the least) but I was more referring to the stretch NO had as the " murder capital" in the U.S. b4 Katrina. It's still a dangerous city, no doubt, but not to the extent it use to be. I use to go to NO atleast 3x a month back before Katrina (was actually in Biloxi, the day of the storm.......left that morning, Katrina hit about 7 that night.)
Anyways, one of my best friends, from CT actually, was a cop in New Orleans. He took me on a ride along.... True story....... but broad daylight, and we rolled thru the 9th Ward, homeboy was walking down the street, no shirt, but had an AK slung across his chest with the biggest banana clip I've ever seen. I was like "you gonna do something?" He chuckled and said , there's more of them, than us, you gotta fight the battles you can win. Crazy stuff.
Not sure what the current layout looks like, but back in the day, I'd stay out of the 3rd (I think Caliope-CP3 closed down tho), 4th, & 8th wards as well. Having said all that, some of the best times in my life happened in N'orleans, and you really have no reason to venture into shady parts as a visitor anyways.