TINUI FLOOD-DAMAGED BRIDGE REPLACEMENT
PROJECT OVERVIEW
Following Cyclone Gabrielle, this critical bridge suffered severe structural damage when floodwaters rose to the top of the existing deck. The force of the water bent the original 1,400 mm UB girders by 250 mm and rendered the crossing unsafe. Rycroft Construction was engaged to design and construct a complete replacement, raising the bridge by one metre to improve flood resilience and restore vital access for the client.
PROJECT DETAILS
KEY CAPABILITIES DEMONSTRATED
Full bridge replacement and elevation for improved flood protection.
Complex piling and abutment construction using bored piles and reinforced pile caps.
Precision installation of high-capacity steel girders with controlled pre-camber.
Fabrication and grouting of reinforced deck slabs on site for maximum structural integrity.
Completion of a 55-tonne-rated bridge under tight timeframes following extreme-weather damage.
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25 m span bridge raised 1 m above the previous level.
New abutments constructed with 8 × 400 mm-diameter bored piles to 4 m depth, capped with a 400 mm-thick pile cap.
Two 1,000 HC 235 UB girders with a 135 mm pre-camber installed.
185 mm-thick concrete deck slabs, grouted and finished on site, with new handrails.
Rated load capacity: 55 tonnes.
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Restored essential heavy-vehicle and daily farm access across a flood-prone waterway.
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Private agricultural client, Tīnui region.
