HUNDREDS of thousands of commuters are bracing for travel chaos this weekend.
An entire tube line will be brought to a halt due to track work.
Transport for London has warned that the Hammersmith&City line will be shut across Saturday, March 7 and Sunday, March 8.
This is reportedly due to track work being carried out along the line.
Sections of the Circle, District and Metropolitan lines will also be affected by the shutdown.
Passengers traveling between Hammersmith and Tower hill, and between Edgware Road and High Street Kensington on Circle and District lines will need to find a different route.
Those who commute between Baker Street and Aldgate on Metropolitan line will also have to pick an alternative journey.
A huge chunk of Piccadilly line will also be closed over the weekend with no service between Cockfosters and Uxbridge, even on Friday and Saturday Night Tube.
The disruption comes as part of a major upgrade plans on the line, which will see new trains introduced, tracks improved and better CCTV installed on platforms.
Acton Town and Heathrow will continue to provide services.
The closure means commuters will have to seek alternative routes or replacement transport, with other Tube and rail services expected to be busier than usual.
Meanwhile, parts of the DLR will be closed to test out a batch of upgraded trains.