The City Rail Link is the largest infrastructure project ever to be undertaken in New Zealand
The CRL is a 3.45km twin-tunnel underground rail link up to 42 metres below the city centre transforming the downtown Britomart Transport Centre into a two-way through-station that better connects the Auckland rail network
It includes a redeveloped Mount Eden Station, where the CRL connects with the North Auckland (Western Line) and two new underground stations - one mid-town at Wellesley and Victoria Streets provisionally named Aotea and one uptown at Mercury Lane, off Karangahape Road - provisionally named Karangahape.
It will extend the existing rail line underground through Britomart, to Albert, Vincent and Pitt Streets, and then cross beneath Karangahape Road and the Central Motorway Junction to Symonds Street before rising to join the western line at Eden Terrace where the Mount Eden Station is. Mount Eden Station will be significantly re-developed
Britomart will no longer be a "dead end" station but a through station
The depth of the two new underground stations - Aotea Station 11m depth and Karangahape Road 33m
The CRL is jointly funded by the Government and Auckland Council
City Rail Link Ltd which came into being on 1 July 2017, has full governance, operational and financial responsibility for the CRL, with clear delivery targets and performance expectations. The project 's total cost will be within a funding envelope of $3.4b
Completion date- the CRL is due for completion in 2023.