Great find! Sorry I doubted you! After looking at that footage, and seeing as how the bike path and sidewalk are side by side but on the same level, perhaps we could re-tag these ways as feature type Cycle & Foot Path, with the oneway applying to only bikes: 
bicycle=designated  
highway=cycleway  
cycleway:surface=asphalt  
oneway:bicycle=yes  
foot=designated  
footway:surface=concrete  
segregated=yes  
surface=paved  
What do you think?