From NYC's Department of Transportation:
One lane on the north inner and outer roadways of the Williamsburg
Bridge will be closed on Saturday and Sunday from 5:00 am to 8:00 pm.
The south inner roadway will be reversed to Manhattan/westbound from
5:00 am to 3:00 pm. There will be four lanes westbound and two lanes
eastbound during these times; from 3:00 pm to 8:00 pm there will be
four lanes eastbound and two lanes westbound.
Stanton Street from Allen to Ludlow Street in Manhattan will be
closed from 1:00 pm to 6:30 pm on Sundays until September 13 for the
Lower East Side BID Weekend Walks.