Wolverton Street Culverts Replacement
Two major stormwater culverts were constructed under a West Auckland arterial road to mitigate the risk of a substantial washout after a major rain event.
The multidisciplinary scope of works included: constructing two single span structures with precast concrete roof slabs; major road realignment and traffic management; installing over 200 bored piles up to 25m deep; protecting major regional above and below-ground services, including the Huia 2 watermain feeding the Waitakere dam supply into the greater Auckland network the IP20 gas main feeding gas to West Auckland and relocations of smaller local services; potable water, sewer, stormwater, power, and gas lines; and upgrading and stabilising the upstream and downstream embankments and streambed.
Early Contractor Involvement was key to the project’s success. BPC and the various asset owners workshopped the constraints around each element and optioneered solutions and potential construction methods.
The project delivered a future-proofed asset for Auckland Transport and a more resilient stormwater and transportation network for West Auckland.
”It has been a privilege to work alongside the Wolverton Project Team and deliver a high-quality asset that will reduce the risk of flooding in the area and create an inviting space that the New Lynn community can enjoy. The ability to successfully carry out the wide range of specialist work that make up this project highlights the multi-disciplinary expertise of BPC.”
Chris Townsend | Site Engineer | Brian Perry Civil
