The description in the book is correct for this bridge, but the picture identifies a bridge "West of Pittsburg"...So I don't believe it to be the right photo. No Pittsburg in this area.
I canoed under this bridge last Sunday (April 14th) it is three concrete arches and quite wide (aprox. 40 feet). It probably carried multi- lanes of tracks. Very similar to the U.S. 40 bridge just north (upstream) of this one.
In the text, they refer to the PCC&StL to the as "Pennsylvania Lines West of Pittsburgh", so the caption may be referring to that nickname.