Wiri Electrical Multiple Unit (EMU) Maintenance & Stabling Facility

Client: Auckland Transport
Timeframe: Completed 2014
Total value: Approx $100M

Components: Award winning, purpose-built facility, designed to house and maintain Auckland’s new fleet of electric trains

Project description:

Built on the site of the old Winstones Quarry in Wiri, the award winning Wiri Depot is a purpose-built facility, designed to house and maintain Auckland’s new fleet of electric trains. Straddling the quarry and land next to the North Island Main Trunk railway line, it comprises six kilometres of rail tracks, a 7163m² main building, a cleaners’ platform and four ancillary structures including a train-wash.

The world-class plant and equipment installed at the depot includes New Zealand’s only in-ground jacks for lifting trains, a wheel lathe, cranes and bogie wash. Office space includes a simulator training room, control room and staff cafeteria.

Complex projects, involving a tight programme, and numerous separate subcontractors onsite interfacing with the main contractor, make it necessary to manage any issues that arise on site to a speedy resolution. The project team achieved this by utilising their broad knowledge, experiences and skills mix, thinking ahead as a project group to brainstorm what could go wrong and what the options are to rectify the situation should potential issues become reality.” Gerard Krishnan, Xigo director


Our role

Xigo director Gerard Krishnan worked as engineer’s representative to the contract on the train depot project. This entailed managing all aspects of the contract including liaising with the head contractor on progress reports, monthly invoicing, variation claims, contract instructions as well as advising the client on decisions which were made on a day-to-day basis to ensure the successful completion of the project.

Main challenges

At its peak the project had over 100 workers from up to 36 contractors and subcontractors working on site. Construction began in May 2012 and needed to go full throttle from start to finish in order to finish on time.  Complexity and time pressure did not lead to any relaxation around the team’s approach to health and safety which was always put above programme and budget.


The importance of keeping the depot to programme was magnified by the interconnection of this project with others progressing simultaneously as part of the wider electrification plan.