The track shutdown and bus bridge that had been planned between Walnut Creek and Concord for Saturday, January 18 and Sunday, January 19 has been postponed. Instead, BART will offer our regular weekend service on both days.
BART will provide Saturday service for Martin Luther King Jr. Day, Monday, January 20. Saturday service means BART will open at 6am and close at midnight and there is less frequency on the Yellow Line (service is every 20 minutes).
Why was it postponed? Seems like a good weekend to get it done with having Monday (as a holiday if needed) to complete it.