Grafton Gully Cycleway & Wellesley Street Bridge

Client

NZTA

Scope

Cycleways/Boardwalks
Complex Structures
Retaining walls
Bridges
Earthworks
Marine and coastal works

Partners

Hawkins
This 1.9km cycleway extension connects the Northwestern Cycleway through central Auckland, requiring bulk earthworks, multiple retaining walls, a concrete cycleway, and a significant bridge over Wellesley Street.

The bridge was built using a top-down method, including bored piles, 60T precast pile caps, double hollow-core deck spans, and a reinforced in-situ topping slab.

Construction occurred in a high-traffic urban environment, requiring detailed traffic management and staged sequencing to allow live traffic operations. Retaining walls included 1,500m² of interlocking concrete crib walls, timber walls up to 2.7m, and a 200m² MSE Keystone wall. The site’s natural watercourse required strict environmental controls and proximity to a historic cemetery involved archaeological and Iwi coordination.

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