Catagunya is located in the highlands of Tasmania near the Derwent Valley. This bridge was a 3 span bridge on concrete piers and abutments incorporating a steel deck. The job required the use of 2 4wd articulated dump trucks to bring in the concrete abutments. The use all-terrain vehicles including all-terrain cranes were needed due to the limited space and accessibility, the ground was rough, steep and soft, with lots of thick vegetation.

Quick Facts

A 50-year old dam being refurbished at a cost of $38 million
Injecting over $15 million into the Tasmanian economy through the use of local contractors and suppliers
25-30 people employed on the project
Local contractors employed to build bridges, pour concrete and supply site cranes
Specialist contractors from Victoria and NSW employed for drilling and anchor installation
92 anchors being inserted into the dam
Anchors 350 mm in diameter with a holding force of 1700 tonnes, the weight of nearly 1000 cars, are the largest anchors in the world
Each anchor is made from 91 strands of high tensile steel wire
Holes drilled up to 75 metres deep through the dam in the rock below
A cement and water grout is pumped into the holes and when set will hold each anchor in place
Cables encased in grease-filled sheaths within a larger plastic pipe to protect from corrosion
Two large temporary bridges have been constructed to provide access to the face of the dam along with a bridge across the Derwent River
Project completion mid-2010.