Harbour Bridge is an eight-lane box truss motorway bridge over the Waitemata Harbour
, joining St Marys Bay in Auckland with Northcote in North Shore City, New Zealand
. The bridge is part of State Highway 1 and the Auckland Northern Motorway. It is the second-longest road bridge in New Zealand, and the longest in the North Island
The bridge has a length of 1,020 m (3,348 ft), with a main span of 243.8 m, rising 43.27 m above high water allowing ships access to the deepwater wharf at the Chelsea Sugar Refinery west of it.Bungy operator AJ Hackett operates a 40m bungy jump from the bridge. They also offer a bridge climb with views of the city and the harbour.While still dominated by car traffic in terms of vehicle numbers, almost 40% of people crossing the bridge during the 7-9am morning peak are using buses.The bridge supports several utility services. These include water and gas pipelines, and fibre-optic telecommunications cables.
As part of large events such as the Auckland Marathon, normal motorway restrictions on access are sometimes relaxed. December 2011 was the first time that cyclists were officially allowed on the bridge, for a race / community cycling event organised by Telstra Clear, Auckland Transport, NZTA and Cycle Action Auckland, also allowing cyclists on the Northern Busway.