Parnell Station Underpass

Client

Auckland Transport

Scope

Rail
Complex Structures
Cycleways/Boardwalks
Pavement and surfacing
Design & Build / ECI

Partners

KiwiRail, Auckland Council, Pollock Cranes, Kidd Contracting, Preco
A critical upgrade beneath KiwiRail’s Southern Line, installing a 250-tonne precast box culvert within a 17-day Block of Line. The project required 1,200m³ of excavation, 800m³ of engineered fill, and service integration, all executed under tight programme constraints.

Through Early Contractor Involvement, we reworked the construction sequence, eliminating unnecessary piling and excavation, leading to $500k in cost savings. Mid-project, CFA piling was introduced to address unstable ground conditions, preventing delays.

Despite a compressed schedule and severe weather, the underpass was installed ahead of programme. The project was delivered without safety incidents, meeting KiwiRail’s stringent operational requirements while maintaining full compliance with environmental and stakeholder commitments.

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