Hi, this is a temporary floating bridge  for the Olympics open for cyclists and pedestrians from 24/07 to 12/08 and from 28/08 to 10/09. The bridge will not be in place before and after these dates. Since these tags are uncommun, perhaps it's best to simply add a comment to mention operating dates and I can remove from OSM on 10/09. There is another bridge right next to it which is less secure and practical but still usuable, so leaving the bridge during the summer shouldn't mislead cyclists and pedestrians.