ALPURT MOTORWAY BRIDGES
Alpurt Motorway Bridges
Transit New Zealand / HEB Contractors / Stevensons
1998 – 1999
Special attention was needed to ensure all environmental issues were identified and effectively managed, ensuring protection of estuaries and control of traffic.
Dominion was proactive in the review of the bridge designs and construction methods, providing more appropriate solutions and enabling reduced construction programmes.
The bridges ranged from single span to multi-span, with work carried out near existing motorways, previously rural sites and at heights of over 12m above tidal estuaries.
Construction methods included structural steel, post tensioning and pre-cast beams with in-situ topping and placement of precast barriers and top rails. The scope of the works also included bulk excavation, piling and construction of Mechanically Stabilised Earth (MSE) retaining walls.
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