Matapiro

Project update (8 April, 2025)

We are pleased to share that vehicles can now drive over the Matapiro Bridge with temporary traffic controls in place through the site. A huge thank you to the community for their co-operation during the recent closure of Matapiro Road, which significantly sped up the construction timeline.

While there is still some work to do over the coming months, including completing the bridge surfacing, finishing scour works, removing the temporary crossing, and some minor tidying-up, the project remains on track for completion by the end of June. An official opening and celebration will then occur with a formal karakia and a Matapiro Pou unveiling.

Key points for consideration

• Temporary crossing challenges: A temporary crossing has provided short-term relief but is vulnerable during significant rainfall events.
• Alignment choice: Reconstructing the bridge on the existing alignment is deemed the optimal approach to meet the required timeline and stakeholder expectations.
• Environmental considerations: The impact on fish spawning in the river is being carefully considered throughout the project's planning.
• Project timeline: The goal is to deliver a permanent replacement structure by mid-to late 2025.
• Bridge design: A two lane bridge with no shared user path has been confirmed as the preferred option for Matapiro Bridge replacement.

Background

Matapiro Bridge was a three-span concrete T-beam bridge with a concrete deck, constructed in approximately 1955. The substructure included two piers consisting of four slender square columns, a pier and two solid wall abutments.

Following the destruction of the concrete bridge during Cyclone Gabrielle, a temporary culverted crossing was deemed an acceptable solution. 

Design considerations

• Two lanes
• Increased height due to flood risk
• Increased pile depth
• Earthquake considerations
• Best practice engineering guidelines and standards