“The machines can’t read it, so we have to. It does get easier after you’ve been doing it for a while. You start to recognize certain things.” -Natalie Jenkins, postal worker who helps decipher letters at the Remote Encoding Center
The U.S.P.S. has long been a pioneer in the field of optimal character recognition AKA OCR. They've got vast rooms of machinery that scan your mail and route it to the appropriate other rooms of machinery until it gets sorted (probably by more machines) and then your postal carrier gets their bundle to bring out to you. Those machines are really good at what they do- 98% good, in fact, according to the New York Times.
When the machine fails, that's where the Remote Encoding Center gets to work. There used to be more of these centers, but as the technology has improved, the U.S.P.S. has closed all but one. Located in Salt Lake City, the 700 workers spend an average of three seconds looking at all the illegible and faded or otherwise confusing addresses. They process 5 million pieces of mail DAILY.
P.S. The image is not one that needed any help being delivered, but all of the photos I found of the REC were boooooooring or not under CC license.