It's interesting that Arkansas has no "Future 49" signs like Louisiana does. Future I-69 and Future I-555, yes; I-49, no.
I agree that it is very interesting that Arkansas does not have any "Future I-49 Corridor" signs, particlarly between I-30 and I-40 (and, on second thought, could "Future I-49" shields be posted along I-540 north of I-40?).
I emailed AHTD and asked them why no "Future I-49 Corridor" signs are posted. The response I received:
We looked into that, but the federal government prefers the project to be further along that what we have at this time to consider the signing.
If that is indeed the case, why did the feds allow "Future I-69 Corridor" signs to be posted? In Arkansas, I-49 is much farther along in progress than I-69.