The Manukau Harbour Crossing project in Auckland successfully built a variety of bridges, including the impressive Duplicate Mangere Bridge and Beachcroft Avenue pedestrian/cycle bridge. The project was completed ahead of schedule, within budget, and to high standards, satisfying stakeholders. The key to the early completion was the innovative design and construction of the Duplicate Mangere Bridge. The Alliance environment fostered collaboration between design and construction teams, leading to successful project management. The Beachcroft Avenue bridge stands out with its striking design, showcasing the Alliance's commitment to excellence. The project also included the Onehunga Harbour Road bridge, providing a safe route for pedestrians and cyclists. Overall, the Alliance's approach resulted in a successful outcome that pleased the client and highlighted the benefits of sustainable bridge construction.