MTA has resumed subway service in Brooklyn, but no trains are operating under the East River into Manhattan. 4 is running from Borough Hall to New Lots Ave, 5 from Atlantic Ave to Brooklyn College, A from Jay St to Lefferts Blvd, B from Atlantic Ave to Bay Parkway, F from Jay St to Ave X, L only from Broadway Junction to Canarsie, and R from Lawrence St to 95th Street. Shuttle buses are running from Barclays Center and Jay St via the Manhattan Bridge to 57th Street & Lexington Ave.
Source: Brooklyn Heights Blog
http://brooklynheightsblog.com/archives/50747