Case Study
CityLink Tulla Widening Gantry Rectification Project
- ClientCPB Contractors
- StartMarch 2020
- Value$30m
- CompleteSeptember 2020
Following the collapse of a large sign onto the Tullamarine Freeway in 2019, this project replaced the N03-15 gantry on CityLink, as well as rectifying and strengthening 15 other gantries between the Bolte Bridge and Tullamarine Airport.
Doing 'it' better
Finished ahead of schedule with zero lost-time injuries
FSC Scope
- Acting as the project’s ‘Nominated Authority’ (approved by Transurban and the Department of Transport)
- Managing welding supervisors, NDT technicians, crane crews, welders, painters and electrical installation crews
- Guiding and monitoring a 20-strong team to rectify gantries
- Overseeing the fabrication of the steel strengthening supports and components needed to rectify the gantries, as well as the new gantry
Challenges
- Parts weighing up to 140kg
- Working with the fabrication workshop to ensure each component was designed and made to exacting quality standards
- N03-15 gantry had to be installed in a short road closure window – with no overruns
- Extensive planning to install gantry components with cranes during the road closure
Smarts
- Using photogrammetry to scan the 15 gantries needing rectification
- Ensured every new component was made to the unique specifications of the gantry it was intended for, ensuring an exact fit, first time
- After installation, each gantry was scanned again to become the job’s ‘As-builts’
Achievements
- Providing Transurban, the Independent Reviewer and Department of Transport with comprehensive daily progress reports.
- Accuracy and detail in the reports created a strong bond of trust, meaning the parties only visited the site four times during the entire project – each time providing positive feedback.
Performance
- Safety: 0 Lost Time Injuries
- Program: Finished ahead of schedule
FSC People
- Martin Simic – Gantry Fabrication Nominated Authority
