City Rail Link

City Rail Link
Overview
StatusUnder construction
Owner
  • City Rail Link Limited (During construction)
  • Auckland Transport (After completion)
LocaleCentral Auckland, New Zealand
Coordinates36°50′58.81″S 174°45′48.56″E / 36.8496694°S 174.7634889°E / -36.8496694; 174.7634889
Termini
Connecting lines
  • Western Line (Maungawhau)
  • Eastern, Southern, Western (Britomart)
Stations4
Websitecityraillink.co.nz
Service
TypeCommuter rail
SystemAT Metro
Operator(s)Auckland One Rail
Rolling stockAM class
History
Commenced2016 (Preliminary works)
Planned opening2026
Technical
Line length3.5 km (2.2 mi)
Number of tracks2
CharacterUnderground
Track gauge1,067 mm (3 ft 6 in)
ElectrificationOverhead line at 25 kV 50 Hz AC
Highest elevation70 metres (230 ft) above relative to Britomart station
Maximum incline3.5%
Route map

Maungawhau
Karanga-a-Hape
Te Waihorotiu
Britomart
Grafton
Parnell
Newmarket

The City Rail Link (CRL) is a rail project currently under construction in Auckland, New Zealand. The project consists of a 3.5-kilometre-long (2.2 mi) double-track rail tunnel underneath Auckland's city centre, between Britomart and Maungawhau (Mount Eden) railway stations.

Two new underground stations will be constructed to serve the city centre: Te Waihorotiu near Aotea Square and Karanga-a-Hape near Karangahape Road. Britomart, officially renamed Waitematā, will be converted from a terminus station into a through station, and Mount Eden station will be replaced by Maungawhau station, a new station with four platforms to serve as an interchange between the new CRL line and the existing Western Line.

The current project is an adapted version of previous proposals to improve rail access to Auckland's city centre with the first proposals dating back to the 1920s. The increase in rail patronage in Auckland during the early 21st century, particularly after the opening of Britomart Transport Centre in 2003, led to renewed interest in the scheme. The 2012 Auckland Spatial Plan highlighted the CRL as the most important transport investment for Auckland and the project has enjoyed strong public support. Its planning and funding have also been the subject of controversy.

In June 2013, the central government announced its support for the project with a construction commencement date of 2020, four years later than Auckland Council's preferred start date of 2016. Prime Minister John Key announced in January 2016 that central government funding for the project had been confirmed, allowing Auckland Council to start construction of the main works from 2018, with central funds guaranteed to flow from 2020.

Preliminary stages of construction, including the relocation of stormwater infrastructure and tunnelling in the vicinity of the Commercial Bay redevelopment, began in 2016. Contracts for tunnel boring and construction of the CRL stations were awarded in July 2019, with major works beginning soon after.

Test trains commenced on 13 February 2025. The City Rail Link is scheduled to open for passenger travel in early-2026.