Seventeen Mile Rocks Road Intersection Upgrade

Project Scope

This contract for Brisbane City Council upgraded an existing un-signalised intersection to a signalised intersection at Duporth and Seventeen Mile Rocks Roads.

Works required included:

Road excavation and embankment

Design and construct 4m high retaining walls

PUP relocations and management

Stormwater and subsoil drainage

1.5m deep lift asphalt (4000 t)

Installation of pedestrian facilities

Landscaping

Street lighting, traffic signals and other electrical works

Traffic management

The nature of the works required under the contract necessitated extensive management techniques to ensure that the project was delivered on time and safely. A design and construct retaining wall was built to retain the new road. However, due to the topography of the site and access and time restrictions, a relatively new retaining wall block was used which enabled significant time savings to the Client.

The contract also contained partial property resumptions and, as such, required proactive community liaison throughout the project to ensure all stakeholders directly affected by the works were catered for.

Another challenging aspect stemmed from the requirement to maintain full traffic flow throughout the construction process. As a result, 1.5m of deep lift asphalt was needed where the intersection design surface level was raised. These specific design and construction staging requirements dictated a unique approach to construction.

In addition, Public Utility Plant relocations also had to be managed throughout construction. As such programming and scheduling conflicts had to be meticulously managed to ensure timely completion of the contract.

Despite the unique and demanding traffic management and staging requirements of this contract, it was successfully completed without major traffic or safety incident. The project was also completed three weeks ahead of schedule ensuring public inconvenience due to construction activities was kept to a minimum.

Key Staff

Ben Dyson – Contracts Manager

Anton Rheeder – Project Manager

Andrew Schenck – Site Engineer

Sam Carrington – Site Supervisor

Challenges

Design and construction of an innovative retaining wall structure

Complex traffic management with no vehicular or pedestrian incidents

Successfully management of multiple stakeholders and public utility providers

Completion several weeks prior to the date for practical completion

• Project:

  Seventeen Mile Rocks Road and Duporth Road Intersection Upgrade

• Location:

  Seventeen Mile Rocks, Qld

• Client:

  Brisbane City Council

• Practical Completion:

  November 2015

• Contract Period:

  32 Weeks

• Contract Value:

  $6 Million