I see the state relinquished Sam Walton Blvd to municipal control northwest of the US 71B/ AR 12 split ( known as Rainbow Curve) to I-49 through Bentonville.
It seems to me they should end US 71 at Exit 85 at the Bentonville- Rogers City Line along I-49.
Now you have a short useless overlap into Bentonville and US 71B now just has a sudden end and not at its parent.
That would make it US 71 Spur, but I doubt ARDOT will bother to re-sign it.
Not to mention, they'll ultimately push offloading the remainder back up to I-49 at the Bella Vista exit as the overarching goal of ARDOT these days is to offload as many miles as possible to counties and cities so they don't have to maintain them. Can't say as I blame them, but they generally have to throw a large project like a bridge reconstruction to make the deal tempting to the receiving party.
I read that Bentonville was more than happy to receive Walton Blvd as now that they own it, they don’t need permission from the state to make changes to it.
Also I see that AR 72 is discontinuous as it has no overlap with I-49 and former US 71B between its two segments. Unlike AR 12 that is officially, but not signed, along US 71B and I-49, it does end and begin again with ARDOT recognizing it as two different routes with one number as AR 12 is still one continuous route.