Ok, Lex. Trying to be gracious in alternative readings of the funding map.
Federal input, but my rough eye, seems to scale with senators and resource extraction. Seeing as Americans subsidize thier resource consumption, this makes sense that government money would follow it. There's development of oil, we're an exporter now, mind, in Alaska and North Dakota. New infrastructure. The great plains, particularly the dry plains, export less dense value than oil, the infrastructure for beef and grains was laid decades ago. Then underfunded, if you look at the bridges*. So those federal input gaps make sense, too. But they could go lower, like Alabama.
Also, I've gotta say, it gets a bit old having the borders pointed out as man made constructions. Of course they are. They're demarcations of governance and man made rules. This is a line where the accord changes. If we're going to talk about government like it's a real thing, then states are a real thing! Hundreds of years of accord and discord.
*seeing as they export agricultural value and receive back low investment, and all equations must ultimately balance, I'd guess they're exporting the Ogallala.