I am a bit confused by the boulevard's name. 

On the City of Fort Lauderdale's map it is showing as South Atlantic Boulevard (maybe because is using OSM) but when you click on building 545 it shows as Fort Lauderdale Beach Boulevard.

https://gis.fortlauderdale.gov/propertyreporter/?cmd=search&config=config2.json&content=504212AC0530

So what is the official name for the road? Both?