For box girder bridges, check "Concrete Box-Girder Bridges" by Schlaich et al. (1982),Structural Engineering Document no. 1, published by International Association of Bridge and Structural Engineering. It's out of print, but as an IABSE member, you should have acces to an online copy - or you may find it in well-sorted libraries.
The book is not that recent but an excellent guide to box-girder design.
I would suggest you to go through "Design of Highway Bridges: An LRFD Approach- 3rd Ed." by Richard M. Barker & Jay A. Puckett. Quite a handy book to start.