Client

New Zealand Transport Agency

Budget

$180 million

Contract Type

Alliance

Completed

Nov 2010

Location

Auckland

Manukau Harbour Crossing

Better connections and faster commutes

The prospect of 133,000 people visiting New Zealand for the 2011 Rugby World Cup, drove major infrastructure and building projects across the country. The Manukau Harbour Crossing (MHX) was just one example, aimed at creating a faster, safer connection between Auckland airport and the CBD. 

Widening the existing SH20 between Mangere and Otahuhu and delivering a duplicate bridge across the Manukau Harbour, the project significantly reduced travel time between the airport and Auckland CBD, and improved connectivity between the communities of Onehunga and Mangere Bridge. 

Constructed adjacent to the existing Mangere bridge (also built by Fletcher in 1982) the new 650m long twin box-girder bridge provided four lanes in each direction, plus two dedicated bus lanes – doubling current capacity. Five kilometres of new motorway were constructed on SH20, along with three and a half kilometres of pedestrian and cycle routes and two kilometres of major water-main infrastructure.

Benefits for motorway users alone were estimated at $35 million per year and economic benefits for the region significantly larger. The project was also a key milestone towards the completion of the long-planned Western Ring Route, which will connect State Highways 16 and 20 and provide an alternative to SH1.

Benefits for motorway users alone were estimated at $35 million per year and economic benefits for the region significantly larger.

We delivered the project as part of the MHX alliance alongside Beca, Higgins and the NZ Transport Agency. The alliance’s delivery of the project led to the award of a major variation to the contract, the SH20A to Airport project. 

Project Partners

Name Beca

Role Alliance Participant and Design Consultant

Name Higgins

Role Alliance Participant

Awards

Name Alliancing Association of Australasia – Alliance Team of Excellence in a Project Alliance 2010

Name Roading New Zealand Excellence Awards - Z Energy Excellence Award for a Major Road Project 2011