No suprise, eh?
No, not surprised, just more interested. I was looking for the source of the term ("Trade Corridors of National Significance") to see if there was more published on the master plan. From reading the link in Calpernia's post above, along with the Trans Texas Corridor and California's current actions, the plan seems to have been well coordinated.
I think I found the references to the federal plans in the federal highway bill, HR3 -- Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users' (SAFETEA-LU). Subtitle C seems to cover it, including a slew of questionable earmarks. I haven't read the whole thing yet, but it uses the terms "national and regional significance" and a predecessor bill used the term "national economic significance."
Subtitle C--Mobility and Efficiency
Sec. 1301. Projects of national and regional significance.
Sec. 1302. National corridor infrastructure improvement program.
Sec. 1303. Coordinated border infrastructure program.
Sec. 1304. High priority corridors on the National Highway System.
Sec. 1305. Truck parking facilities.
Sec. 1306. Freight intermodal distribution pilot grant program.
Sec. 1307. Deployment of magnetic levitation transportation projects.
Sec. 1308. Delta region transportation development program.
Sec. 1309. Extension of public transit vehicle exemption from axle weight restrictions.
Sec. 1310. Interstate oasis program.