Ok, looks like they brought the travelways together, trading the grass median for a concrete wall. A similar story exists east of MO 125. This lets them carry all four lanes of US 60 over a single bridge going over MO 125.

Speaking of MO 125, they gave it what looks like a peanut-shaped roundabout underneath the bridge connecting to the new entrance/exit ramps.

Some of the old WB US 60, as mentioned, has become an extension (I think?) of Greene County Farm Road 229, not a state-owned outer road as I had suspected. This dead-ends west of the residential area north-west of the note.

Finally a new county-owned road has been constructed from FR 229 to FR 223. West of its intersection with MO 125 it's called Northwest Outer Road (aka. NW/N. W. Outer Road), and east of MO 125 it's called Northeast Outer Road (aka. NE/N. E. Outer Road).

Seems like that's the story here.