Dare to imagine Auckland without the Auckland Harbour Bridge. Before 1959, reaching the North Shore meant ferries or a long road trip. Can you picture Auckland without its iconic landmark?
The Auckland Harbour Bridge is more than steel and concrete. It is an eight-lane motorway connecting Auckland city to the North Shore. The Auckland Harbour Bridge spans the Waitematā Harbour. It carries State Highway 1. The NZ Transport Agency operates it. This bridge is the second-longest road bridge in New Zealand. It is the longest in the North Island.
Initially, the Auckland Harbour Bridge had four lanes. These opened in 1959. They used box truss construction. In 1968 and 1969, two lanes were added to each side. These extensions used orthotropic box structure construction. They cantilevered from the original piers. The Auckland Harbour Bridge measures 1,020 meters long. Its main span stretches 243.8 meters. It rises 43.27 meters above the high water.
Many consider the Auckland Harbour Bridge an Auckland icon. Some criticize the initial design. It lacked facilities for walkers, cyclists, or trains. A walk-and-cycleway named SkyPath once received council approval. The SkyPath was never built. In 2021, the government announced the Northern Pathway. It also was not built.
About 170,000 vehicles cross the Auckland Harbour Bridge daily. This includes over 1,000 buses. These buses carry 38% of people during the morning peak. Engineer Fred Bell proposed a harbour crossing as early as 1860. His plan used floating pontoons. The plan failed due to cost. Other bridge proposals followed in 1927 and 1929.
The Auckland Harbour Bridge’s initial design included five or six traffic lanes. Some lanes would reverse direction based on traffic flow. Footpaths were planned for pedestrians. These features were dropped to save money. The First National Government opted for an austerity design. This design had four lanes without footpaths.
The Auckland Harbour Bridge Authority formed in 1950. Sir John Allum chaired it. Freeman Fox & Partners designed the Auckland Harbour Bridge. Dorman Long and the Cleveland Bridge & Engineering Company built the Auckland Harbour Bridge. The bridge took four years to build. The steel girder pieces were made in England. They were then shipped to New Zealand.
The Auckland Harbour Bridge was constructed from opposing sides. The southern section was cantilevered. Both sides joined in March 1959. The Auckland Harbour Bridge officially opened on 30 May 1959. Lord Cobham was present. An open day saw 106,000 people walk across it. Three or four men died during construction.
The Auckland Harbour Bridge started as a toll bridge. Tolls were collected at the northern end. The toll was discontinued on 31 March 1984. The toll system was removed because collection costs outweighed profits. The Auckland Harbour Bridge Authority enquired if the National Roads Board would take over operations.
The Auckland Harbour Bridge has clip-ons. The clip-ons increased the number of lanes. The clip-ons were prefabricated in Japan. The clip-ons doubled the number of lanes to eight. Cracks and material fatigue have plagued the clip-ons.
The Auckland Harbour Bridge has a tidal flow system. The direction of the two center lanes changes during peak traffic. A movable concrete safety barrier separates traffic. The Auckland Harbour Bridge is used for events like the Auckland Marathon.
AJ Hackett operates a bungy jump. Vector Limited uses LED lights to illuminate the Auckland Harbour Bridge. These lights are powered by renewable energy. The Auckland Harbour Bridge stands as a testament to Auckland’s growth. It showcases engineering innovation. It is a symbol of connectivity. As we conclude our visit, take one last look at the Auckland Harbour Bridge. Remember the stories, the struggles, and the triumphs that shaped this iconic structure.