Might be great for understanding the basics of bridge structural analysis, but that would be about it. Options for refined analysis that are readily available today did not exist in 1963
It would be way out of date for understanding the AASHTO Standard spec that is still in (limited) use (17th Edition, from 2002). I'm thinking it would be pretty much useless for any version of the AASHTO LRFD spec, which is what is used currently for design.
It would also be way out of date with regard to economic efficiency, and the materials, methods, and options for construction.
Newer books are available that also cover the basics, but also cover the modern tools for design, incorporate the advances in understanding of material behavior (especially concrete), are written referencing the modern design specifications, and recognize the current state of practice with regard to economical design.
Rod Smith, P.E., The artist formerly known as HotRod10