When Andrew Walter Constructions (AWC) won the contract to widen the carriageway on the West Tamar Highway (Brady’s Lookout) in Tasmania they undertook a comprehensive assessment of options for the wall component of the project which was a design and construct element.
The process evaluating the MassBloc® retaining wall system along with other competing systems led AWC to arrive at a system that best met the requirements for compliance, aesthetics, time and cost.
For the client, the Department of Infrastructure, Energy and Resources (DIER), the MassBloc® retaining wall system’s inherent versatility met a variety of requirements. In particular, the speed and ease of installation ensured that retaining walls could be completed while allowing safe and efficient traffic flow to continue through the work site. This prevented unnecessary delays to construction, often an issue with traditional retaining wall options.
During installation the flexibility of the MassBloc® retaining wall system also ensured AWC was able to manage the significant horizontal and vertical curves in the new road alignment. AWC incorporated a ‘lay back’ of the blocks on a number of retaining walls to maximise the efficiency of the design and reduce material inputs.
The end result has left a positive impression not just on the client, but the local Council too. In a recent press article, West Tamar Mayor Barry Easther indicated that the Council was delighted with the work.
“We’ve had very little interruption to traffic movement and people are very impressed with the design of the highway.”
The $9m project was completed toward the end of 2013.