Candys Creek Retaining Wall Repairs - PW

This is a Physical Works contract for repairs to the Candys Creek Retaining Wall located below State Highway 73 (SH73) at RP 151/3.10-3.18.

The Contract Works comprise of:

- Temporary Traffic Management;

- Site establishment and clearance activities as required for access to work areas;

- Provision of access to complete the specified works. This may be provided by constructing an access track north to the site from Starvation Point, the use of a cableway from the Otira Gorge Rock Shelter Lookout or a combination of the two;

- Realignment of the Otira River, completed by moving boulders from the true left of the river to the true right;

- Excavation and construction of a keyed ‘toe beam’ at the base of the Retaining Wall. This is to be excavated to below the existing river bed level;

- Backfilling of the voids behind the wall with mass concrete, including the installation of drainage;

- Concrete repairs at crest and face of the wall where Candys Creek discharges;

- Construction of Shotcrete facing;

- Environmental compliance including preparation and implementation of environmental Management Plans;

- Site reinstatement in accordance with Department of Conservation (DoC) approval conditions.

Only tenderers pre-qualified to Bridge Construction – Level A, B or C (3A, 3B or 3C) and Construction – Level A, B or C (4A, 4B or 4C) under the terms of the Transport Agency’s Prequalification System are eligible to submit a tender.