The Economic Times

In 1959, Auckland opened its Harbour Bridge after 3 years of construction. 10 years later, clip-on sections doubled its capacity from 4 lanes to 8 lanes for city traffic

Auckland Harbour Bridge's initial construction prioritized affordability over immediate full capacity. The bridge was later expanded with clip-on lanes to meet growing traffic demands. This staged approach allowed the city to finance infrastructure as its economy grew. The expansion doubled the bridge's traffic capacity at a relatively lower cost. This strategy enabled Auckland to develop its harbour crossing over time.