Hi, Udarian!
You’re right, according to Lyft-owned aerial imagery there is a physical barrier separating one-way roads. But at the moment of making changes to the OSM we were not sure of the direction of the roads (no markings visible) and that the exit road was already open due to lack of information. Thanks to your comment, we can now make changes to the road geometry (https://www.openstreetmap.org/changeset/147088007). 
Best regards, Veranika
