Aotearoa’s largest steel culvert.
Murphy's Road Culvert
Client: Auckland Council
Project Background
Our challenge was to find a solution that protected the stream, satisfied Council requirements, was economically acceptable to the client and would be an asset to the development.
Project Overview
The resulting structure is in Auckland’s Flat Bush community. It boasts a 22 metres long by 15 metres wide culvert made up of approximately 100 steel plates!
This was Auckland's first CSP Pacific's Super•Cor® Arch – a super strong, galvanized steel structure - to enable access across a stream on the first part of this development.
This construction method was specified for the job because of its cost effectiveness and the fact that it could be installed without disturbing the stream bed, or the fish.
Over a few weeks, our Structures Manager, Jason Anderson, and his team installed the 23m long structure, and then the real work began. "This is the first steel plate structure I have installed, and it went together incredibly well", says Jason.
The steel components went together without a hitch, and this part of the process was far quicker than expected.
Jason Anderson
Structures Manager
Once the steel was installed, the team built retaining walls then filled and compacted each layer building up the approaches to the culvert.
The top metre of the road surface contains drainage and service utilities that required conductor-like organisation. Within such a constrained workspace, traffic was tightly controlled, restricting some activities and leading to some innovative solutions.
