On the main map, there is a railroad line from Baton Rouge to Texas. During the Civil War, I don't beleive there was a railroad accross Southern Louisiana, and in fact that line was not built until after 1870.
There were two rail lines that extended West of the Mississippi into Louisiana. The first, through Vicksburg, had Monroe,LA as it's terminus. The second, through New Orleans, terminated at the railhead at Brashear City,LA (Berwick is about right here, and Brashear City was captured with a huge pile of supplies in '63 by Taylor in the Bayou Teche campaign).
Texas had a railroad network centered in Houston, but that extended only as far as Sabine Pass, NOT into Louisiana. The railway link from Texas to New Orleans, the Southern Pacific Railway, was not completed until after 1870.
I can't find an authoritative link unfortunately to prove it, other than some ACW books I own, but I am SURE that is correct.
As another note, Little Rock was also NOT on the rail net. The line from Memphis terminated at Madison, AR.
I apologize if others have point this out. Am I wrong, or am I right?