START: 2020 - FINISH: 2021

PROJECT OVERVIEW

Vasse Joint Venture (VJV), an arrangement between Westforce Construction and JWI Contractors were awarded on behalf of Water Corporation to upgrade more than 6km of the existing Vasse Diversion Drain (VDD).

The VDD was upgraded, and the Vasse River Diversion Dam reconstructed, during the eight-month project delivery window which also included the design of the pedestrian bridge and redesign of the concrete lined drain section.

The combined team preformed incredibly and the joint venture was a huge success.

The project was awarded the 2021 CCF WA Earth Award for Excellence in Civil Construction for project values between $10M - $30M.

PROJECT SCOPE

Construction works completed within the confines of live operational roads and in consultation of numerous land owners.

The scope included -
Install and Maintenance of 4x coffer dams;
Removal and reconstruction of the diversion dam;
Construction of an overflow spillway at the diversion dam;
Removal and reconstruction of the diversion drain levees;
Excavation of internal berms to increase the diversion drain waterway;
Scour protection in the drain;
Replacement of drainage culverts discharging into the diversion drain;
Diversion of 50 l/m MSCL Piping and Valves Design and construction of an extension to the steel truss pedestrian bridge and upgrade to the concrete lined section of the drain including increasing the height of the walls.

PROJECT STATS

Bulk Earthworks: 510,000m³
ASS Treatment: 21,500m³
Topsoil Replacement & Hydro Mulch: 220,000m²
Gabions & Rock Pitching: 10,000m²
Limestone Blocks 4,800
Fencing: 6,000m
Concrete: 3,000m³
Gravel Pavement: 45,000m²

Apprentices / trainees target exceed by 60%
Aboriginal employees and businesses target exceeded by 50%
Over 100,000 worked hours with zero injury's
Project completed 52 days ahead of schedule
Value engineering provided over $750,000.00 saving to the client +