Libraries have been moving away from warehousing print books for at least the last two decades.  One of the challenges of running a modern library is to fit new services in a space designed before the digital revolution we are now experiencing.  Springfield has some pretty sharp librarians and I am sure they will help design the best possible space.  It is hard to know what will be needed decades in to the future but I am sure they will not plan on housing lots of print books.  Print will still be important but is only a small part of the modern library's services. For some examples of recent library building projects, see https://americanlibrariesmagazine.org/2016/09/01/2016-library-design-showcase/

By the way, our libraries (Eugene, Springfield, UO, etc.) are already a great source of ebooks, databases, GIS, streaming videos, etc. etc.  Amazon is great and I use it but the library offers so much more.