Old Māngere Bridge Project

Originally opened in 1915 the Old Māngere Bridge is a dual motorway bridge over the Manukau Harbour in south-western Auckland, New Zealand.

Image: Original Māngere Bridge in 1907. (Source Auckland Libraries Heritage, Footprints 01120).

Jonel Hydraulics was engaged in November 2018 to conduct a replacement project that included the demolition and removal of the 250m long bridge and construction of a new bridge. The bridge had been used for over 100 years; thus it was ready for a revamp in order to improve the access underneath the bridge to the Manukau Harbour and Māngere Inlet for Waka, small boats, and kayaks. 

The new 300m bridge features a shared walking and cycling bridge between the ends of the existing causeway. There is a central 60m span in structural steel together with nine approach spans in reinforced concrete. McConnell Dowell has delivered the Waka Kotahi NZ Transport Agency project. This new layout has been designed for safety and accessibility for pedestrians, cyclists, and recreational users. 

Some of the key features of the bridge have been refined in accordance with the feedback we received from the community:

Images: Key Features of the bridge. (Source: Waka Kotahi – NZ Transport Agency).

The construction of the new bridge is now complete (October 2022). Mana Whenua gave the name Ngā Hau Māngere to reflect the cultural history and landscape in which it sits. In translation it means the ‘gentle lazy winds’.

Jonel Hydraulics provided a full system (jacks, valves, hoses, manifolds, electric hydraulic pump) to power the hollow core cylinders at the top of each corner of a frame that supported the lowering of a cofferdam waler, by the use of a macalloy bar.

We have worked with a wide range of clients on a variety of different bridge projects. We welcome clients who would like to involve us in the technical aspects of their upcoming projects. Contact us here! 

To learn more about the initial phase of this project click here