Thanks! Organic Maps updates once a month, so I can’t check how the new changes are rendering there yet. I think there may still be some layering problems in the area though.

For example, this segment of the Western Distributor:
https://www.openstreetmap.org/way/46914884#map=15/-33.8758/151.1968
…has layer=2. Yet the man_made=bridge area…
https://www.openstreetmap.org/relation/14657473#map=15/-33.8741/151.1969
…has layer=4. Physically I think this road is on the bridge (?), but the current layering suggests it’s underneath it.

The problem seems to start from the southern end of the ANZAC bridge and finish near Sussex Street in the CBD. 

I’ll try to attach a screenshot - that might make the extent of the problem clearer. 