The Strand Culvert Replacement

Scope of Works

This contract showcases Waiotahi’s capability of supplying and installing large capacity box culverts successfully below groundwater levels. The project was carried out in a marine environment where subgrade materials had little strength and required undercutting and replacement with imported materials.

A significant aspect of this contract was the temporary shoring and diversion channel constructed using Waiotahi’s expansive inventory of sheetpiling and sheetpiling driving equipment to provide a cofferdam for the culvert installation.

Description of Works

Removal of three existing 900mm diameter culvert pipes and replacing with a new 4m wide, 2m high box culvert:

• Foundation preparation.
• Box culvert installation.
• Backfilling and compaction.
• Pavement construction.
• Road surfacing.
• Road marking and associated traffic services.

Quick Facts

• Contract Value: $359,347.06
• Location: The Strand, Whakatane
• Duration: 4 July 2015 – 10 September 2015
• Completed on time and within budget