Wellington Metro Upgrade2

The WMUP 2 project involves the replacement of over 33 kms of overhead traction line infrastructure from Kaiwharawhara to Upper Hutt in seven separable portions. The overhead renewals consist of replacing all the existing timber and life expired structures  with galvanised steel structures and foundations suitable for the localised ground conditions. 1300 timber poles need to be replaced by 2021. The current fixed tension system will be completely changed to a fully regulated, auto-tensioned wiring system.

Octa is providing Engineer to the Contract services and assisted with the preparation of contract documents, responded to tender queries and recommended a preferred contractor.  Once the contract was awarded to Fulton Hogan/JV Holland, the Engineer is responsible for governance support and other advice as required. 

Octa’s John Burrell was Engineer to the Contract on the recently completed $45 million WTOSR project for KiwiRail.  The innovations and lessons learned on this very successful project will provide valuable guidance on this next stage which began construction in January 2018.

The existing traction overhead system needs to remain in place and operational right up until the new one is commissioned, even though they share the same space. Each new section takes months to construct with minimal closures on occasional weekends, public holidays and after hours. Diesel trains often operate through the site when the overhead power is off and construction works are occurring.

Project Name

Wellington Metro Upgrade2