City Rail Link (CRL)



CRL is New Zealand’s first underground metro rail system and largest infrastructure project. This project is part of Auckland’s revamp connecting rail lines from Britomart Station, downtown to Mt Eden Station. The route will cut out 30 mins of travel time for commuters as it allows the rail network to double its passenger capacity. The CRL is a 3.45km twin-tunnel underground rail link up to 42 metres below the Auckland CBD city centre.

asBuilt were engaged with in the project, due to their extensive knowledge of Digital Engineering (DE), Surveying and digital Common Data Environments (CDE) environments.

*Images were sourced from CRL and Redshift, Autodesk.
220426-CRL-Auckland-public-transport-Collab-600x400 210215-CRL-K-Road-train-station-600x400


Link Alliance


3.45km tunnel 42m below Auckland Central




Large project with multiple services and companies working in Common Data Environments (CDE). Initial setup needed to be done correctly to ensure the project stays on time and in budget.


asBuilt assisted in setting up the project on all required programs and ensuring the linking together for CDE.

They were then required to help teach the wider DE team of all processes and protocols to ensure the longevity and health of all models.


  • Provided two critical roles to support digital delivery and specified BIM outcomes
  • Set up and review workflow for all cloud-based working models and drawings
  • DE station Design and Model coordination