It's awful, for sure, but I'm not sure that I would also categorize it as an emergency. But my sympathy is definitely with you.
It has been categorized as an emergency from our Governor, why wouldn't you? Aside from your average commuter being delayed it will also effect emergency vehicles. It really is a crippling location for Atlanta, this is no average highway, 5 lanes in either direction that stay full all day long and no way to route traffic around the problem efficiently.
edit: Logistical problem with shipping as well.
The governor categorized it as an emergency for political reasons. This involves mechanisms for funding, etc. It's awful, for sure, but I just don't categorize this as a true emergency. All of your concerns involve delay. If goods and services can't get through at all, then I would agree that it's an emergency. Other cities have weathered this same thing. They made out fine, albeit with significant inconvenience.
But with most semantic concerns, there is room for differing opinions. I don't begrudge your categorization for that reason.