This is the City library system, and the building is located on 14th and Olive. It's within walking distance of where I work, but I don't do a lot of research there. I've done some, when I've found through WorldCat that they have a book I want, but it hasn't been often. While the building is beautifully constructed, and a pleasure to behold, I am personally most grateful for their online index of the St. Louis Post Dispatch obituaries.
In all the detailed changes, a couple paragraphs stood out
Excellent! The stationary computer lab and wireless internet connection are almost essential for any major library renovation today, in my opinion. But the laptop checkout station is a brilliant addition. While I have my own laptop the majority of patrons will not.
The library will also add a stationary computer lab, a laptop checkout station, and the entire building will offer wireless internet connection.
Also, many of the library’s collections will be digitized, says McDonald, including special collections of photos from the 1896 tornado, photos of the Muny, of St. Louis neighborhood and glass plate negatives from the late 1800s and early 1900s.
Here's a video about the history of the library and plans for renovation