Britomart station will remain closed tonight after a train derailed just out of the station this morning.
There will be delays and changes to where trains depart and arrive this afternoon and tomorrow morning, an Auckland Transport spokesman said.
Eastern Line services will arrive at and depart from The Strand on a 20-minute frequency, Western and Southern Line services will arrive at and depart from Newmarket on a 20-minute frequency.
Onehunga Line services will run as a shuttle between Onehunga and Penrose, linking to Southern Line services.
There will be limited replacement buses running between Britomart and The Strand and Britomart and Newmarket.