The disruption will affect services on Sunday only (June 22).
Services will resume as normal on Saturday (June 21).
We’ve broken down the changes so you can plan.
Sunday (June 22):
All lines via Bexleyheath will be closed all weekend due to the works between Lewisham and Dartford.
No trains will run between London Victoria and Dartford. Services between London Cannon Street and Slade Green via Bexleyheath will be diverted to run via Sidcup and will not stop at Lewisham.
Trains between London Charing Cross and Hayes, Dartford via Sidcup, and Sevenoaks via Grove Park will all run but will not stop at Lewisham.
The following stations will be closed all day and will only be served by replacement buses: Lewisham, Blackheath, Kidbrooke, Eltham, Falconwood, Welling, Bexleyheath, and Barnehurst.
Replacement buses will run between New Cross and Dartford via Bexleyheath, calling at all stations.
Passengers can use alternative routes at no extra cost.
These include the Docklands Light Railway between Lewisham and Greenwich, and London Bus routes P12 and 78 between Peckham Rye and Nunhead, 484 between Denmark Hill and Lewisham, and 21, 225 and 273 between Hither Green, Lewisham and New Cross.
Passengers can also use London Underground services between Victoria, Charing Cross, Embankment, Cannon Street, Waterloo, Southwark and London Bridge.