The Dinmore to Goodna Project was a highly complex brownfield project with a very high community interface.
In particular, the project involved demolition of 15 existing bridges and construction of 26 new bridges, all of which required more than 40 major traffic switches as well as numerous re-routing of traffic and pedestrians using the local road network.
Construction took place under live traffic conditions of approximately 90,000 vehicles per day in an extremely constrained urban corridor, with a Queensland Rail Corridor (QR) on the northern side and residential /commercial properties on the southern side of the motorway.
Three abandoned coal mines dating back to the 1860s which were located underneath the construction footprint and needed to remediate.
Unforeseen Challenges
- Discovery of more than 200 unexploded ordnance within the construction footprint; and
- Impacts of the January 2011 floods in QLD which virtually wiped out the main Origin Alliance project site offices.
Contribution of a VDC/BIM solution linked with GIS
- Delivered a saving of $200million, and 6 months early
- Increase efficiencies of construction staging;
- Provided a 3D virtual model to assist conflict resolution and deal with information requests (RFI’s);
- Provided all project staff with a dynamic, versatile, online mapping tool loaded with data from the project teams;
- Kept all data (and metadata) in the system accurate and current at all times;
- Integrated non-spatial systems with a web-based mapping application called, OriginMap
- Visualised the overall upgrade design
- Provided stills and animations for the community consultation team
Result
The project cost of 1.95Billion, had a 51-month construction program, which was delivered six months early and approximately 10 per cent under budget, despite both the known and the unforeseen challenges.