Second Harbour Crossing, Auckland

The Second Harbour Crossing is the name given to the proposed second transport link across the Waitematā Harbour in Auckland, New Zealand. Planners have also referred to new links across the harbour as the Additional Waitematā Harbour Crossing (AWHC) or the Waitematā Harbour Connections (WHC). Roughly a third of New Zealand's population live in the Auckland Region, and the harbour bisects the city between its CBD and the North Shore. The current Auckland Harbour Bridge, built in 1959, was widened significantly in 1969 but has long been at capacity during peak hours. Carrying both national north–south and local traffic, it is a significant choke point in New Zealand's road network. The alternative motorway route around the edge of the harbour is also near peak capacity despite widening programs, and is easily gridlocked if the bridge is closed due to an accident or adverse weather conditions. The current crossing's limitations are a major contributor to Auckland's wider traffic congestion issues and their accompanying economic impacts. New crossings have been proposed repeatedly over the previous decades. Most recently, in 2023 the Labour government of Chris Hipkins announced plans for a new crossing—involving two new road tunnels and a single light rail tunnel—to begin construction in 2029. However, with Labour's loss in the 2023 General Election these proposals are under revie

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).