The tunnel will remain open to northbound traffic, with occasional diversions. Maintenance closures of the Blackwall Tunnel will continue as normal between 23:59 BST on Saturdays and 07:00 on Sundays.
Transport for London (TfL) warned drivers to expect roads and alternative river crossings in east and central London to be "extremely busy" with "long delays".
Queues along the A13 westbound between Canning Town and Whitechapel and on the approaches to Rotherhithe Tunnel throughout the weekend are expected, TfL said.
The 108 bus route operating through the Blackwall Tunnel will be divided into two, running between Lewisham and North Greenwich, and between Canning Town and Stratford. TfL advised using Tube and train services for central London trips.
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