Victoria Park Tunnel

  • $340m 0.44km cut and cover tunnel
  • Stormwater engineering detailed design
  • Innovative design solution allowing the retro-fit of existing drainage
  • Stakeholder management

The Victoria Park Tunnel (VPT) was one of the country’s seven Roads of National Significance identified by the Government as essential to future economic growth. As well as the tunnel, the project included motorway widening through St Mary’s Bay up to the Harbour Bridge, improved bus priority measures and better walking and cycling access to the Auckland CBD and waterfront.

The project involved building a 440-metre cut and cover tunnel for three lanes of northbound traffic and widening the motorway through St Mary’s Bay by one traffic lane in each direction. The object of the project was to primarily assist with congestion relief on the motorway system. The tunnel eased the bottleneck previously created by the Victoria Park viaduct, and the overall widening of the motorway carriageway made best use of the unused capacity of the Harbour Bridge.

Synergine’s passion to harness “the power of working together” is demonstrated by our ability to work collaboratively within an alliance model to deliver this project.

Stormwater Engineering Design

Our Technical Services team worked with Fletcher Construction and Beca to deliver value engineering and detailed design for stormwater on the Victoria Park Tunnel (VPT) Alliance Project.  In addition, Synergine’s role encompassed engagement with suppliers and affected stakeholders, such as Auckland City’s Westhaven Marina.

Synergine worked in close collaboration with other design and construction teams to successfully coordinate the design and ensure the buildability of stormwater infrastructure and new stormwater treatement in St Mary’s Bay, between the tunnel and the Harbour Bridge.

Synergine was responsible for delivering drainage solutions along 1,500 meters of State Highway 1 in St Mary’s Bay between the tunnel and the Harbour Bridge. This section needed widening, and the brief called for reuse of as much of the existing drainage as possible and the installation of stormwater treatment wherever possible. Our work in modelling the existing drainage to check capacities, assessing pipe condition, design of new drainage and retrofitting of existing drainage both achieved the brief and maximised the potential for stormwater treatment close to the high tide level.

Find out more:

  • Aaron Wood General Manager email