Port Road Bridge Construction

Spiral Drillers was contracted by United Civil to install 10 Bottom-Driven Steel Piles for the new Port Road Bridge in Whangarei. The project was made up of two abutments and a central pier, requiring the construction of a temporary stage spanning 20 metres. The temporary stage was essential to enable access for both piling operations and abutment construction. The Bridge Piles were driven to depths of up to 27 metres, employing an 8-tonne free-fall hammer, and PDA testing was used to verify capacities.

The staging involved two, 10 metre spans. Spiral Drillers were responsible for all temporary works design, installation and sign off. The structure was then removed after abutment construction, prior to landing bridge beams. In addition to the Bridge Piles, a Sheet Pile Wall consisting of 57 Sheet Piles was installed. 24 metre deep Timber Piles were also installed as ground improvement on the approach structures.

Our comprehensive range of plant and equipment, combined with our marine works expertise, enabled us to successfully accomplish all aspects of the piling work.