OP here...

Looks like both directions of MO AA should reach the northern freeway ramps, and both directions of MO BB should reach the southern freeway ramps. This creates a short concurrency between MO AA and US 40 as well as between MO AA and BB under the interstate. There should be no concurrency between MO BB and US 40. Route relations and some way ref tags need to be updated.

Source: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-modot-roads-routes/explore