Pat Baker Co. Kingsbury, TX (830)639-4427
David Baker is an Aggie. They usually have access to wrecked rail cars and have put up several bridges that I know of, probably many more. They are top notch... I know of one installation where they re-routed the San Marcos river and installed a railcar bridge near Prairie Lea.
EDIT: I was posting from a phone and accidentally put Kingsville instead of Kingsbury. Sounds like the OP figured it out.
[This message has been edited by SWCBonfire (edited 10/19/2009 8:46p).]