The plan, which is largely a continuation of the ATAP 2018-28 programme, was announced by Auckland Mayor Phil Goff and Transport Minister Michael Wood on Friday.
"At $31 billion this is the largest capital programme ever allocated for Auckland transport infrastructure and services," Goff said.
"We have a huge backlog from years of underinvestment to make up and this is a step in the right direction."
The plan will be funded by both the Government and the council.
A total of $16.3 billion will come from the Government's National Land Transportation Fund, while a further $4.9 billion has been allocated to Auckland from the New Zealand Upgrade Programme, the COVID Response and Recovery Fund and the Government's share of the City Rail Link.