Highway bridge over railroad 15 inches too low.

Railroad raised its Grade

Must be a secret. don't tell anybody

Railroad raised its Grade

Probably just an entry permit to let them on the railroad property

Railroad raised its Grade

[sarcasm]There goes somebody's bonus[/sarcasm]

I'd have thought the clearance over the tracks would have been marked in very large numbers on the elevation drawings, and the contractor would have surveyed the tracks using his own control network to make absolutely certain the clearance would be achieved.
reminds me of this story
http://www.constructionenquirer.com/2013/05/16/cinema-built-75cm-out-of-line-to-be-pulled-down/

Yeah it does sound like a txdot/rr problem not a Gc problem.