Ōtaki to North of Levin: Te Pae o Tararua, New Zealand
Aurecon is part of the Northern Alliance delivering NZ’s Ō2NL expressway, partnering with NZTA Waka Kotahi to improve safety, reliability and efficiency.
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An ageing sewer pipe crossing Auckland’s Hobson Bay was replaced in 2011 with a three kilometre long, 3.7 metre diameter tunnel. A new six cubic metres per second pump station was also constructed in the Orakei Domain.
Aurecon was involved in all of the preliminary and detailed design for the project. Tunnelling technologies never before seen in New Zealand were applied to the project.
Innovative approaches to vortex drop shaft arrangements, grit control and pump station design were required due to the challenging site conditions.
The upgrade provided for population growth in the area and will increase recreational opportunities in the bay. The tunnel’s extra capacity will reduce wet weather overflows, resulting in improved environmental outcomes.
Aurecon is part of the Northern Alliance delivering NZ’s Ō2NL expressway, partnering with NZTA Waka Kotahi to improve safety, reliability and efficiency.
Auckland’s first underground railway system will reduce congestion, bring people closer to job and amenities, and unlock new development potential.
Aurecon's multidisciplinary engineering delivers seismic resilience for Seaview's fuel pipeline upgrade, securing critical energy infrastructure for New Zealand.
