SFO Announces 20-Day Closure of Runway 28L in September 2019 for Reconstruction
https://sfoconnect.com/about/news/96365-sfo-announces-20-day-closure-runway-28l-september-2019-reconstruction
I heard about this while passing through San Francisco last week. There was an airport spokesperson on the radio (IIRC) saying that they were anticipating high rates of flight cancellation and delay during this period, especially for flights departing later than "early morning". You would think the airport and airlines would be doing whatever is necessary to a avoid this (reducing schedules, building schedules around SJC and OAK...).. Maybe what I heard was ill-informed. Still, sounds like a mess in the making.