Case studies

Case studies on recent and proposed noise barriers are available to supplement those discussed in the Noise barrier design guide. The case studies report on key lessons learnt from noise barriers installed on Transport Agency projects for the benefit of future projects.

• Urban design - Wellington inner city bypass - 25/03/2011 [PDF, 3 MB]
• Location - Avalon Drive, Hamilton - 15/07/2011 [PDF, 1.5 MB]
• Reverse sensitivity - Subdivisions in Canterbury - 30/01/2012 [PDF, 2 MB]
• Barrier continuity - Earth bunds and timber fences - 30/01/2012 [PDF, 3.4 MB]
• Visual screening - Kennedy Road overbridge, Napier - 30/01/2012 [PDF, 5.7 MB]
• Visual integration - Maioro Street interchange, Auckland - 09/05/2012 [PDF, 1.4 MB]
• Barrier specification - Hobsonville and Brigham Creek - 01/10/2012 [PDF, 620 KB]
• Integrated noise and safety barriers - Newmarket Viaduct to Greenlane Auxiliary Lane, Auckland - 13/11/2012 [PDF, 3.4 MB]
• Stormwater and barrier design - AMA noise barrier project, Auckland - 19/02/2013 [PDF, 770 KB]
• Performance testing - Auckland noise barriers - 21/08/2013 [PDF, 1 MB]
• Noise effects - Kamo Bypass, Auckland - 21/08/2013 [PDF, 1.4 MB]
• Visual design issues - Walmsley Road, Auckland - 21/08/2013 [PDF, 1.8 MB]
• Transparency - Victoria Park Tunnel, Auckland - 12/03/2014 [PDF, 4.1 MB]
• Noise bunds from surplus fill - Waikato Expressway, Te Rapa - 07/07/2015 [PDF, 1.4 MB]
• Visual treatment by planting - Mt Hobson Road, Auckland - 01/05/2016 [PDF, 934 KB]
• Nose barriers: Noise walls costs case study - 06/06/2018 [PDF, 206 KB]

For further information contact environment@nzta.govt.nz.