The Melbourne Metro (Metro) is a transformational project for the city, which includes a nine-kilometre tunnel running under the central business district (CBD), to connect the West and East, and is estimated to cost approximately $11 billion.
Metro is providing much-needed economic stimulus and employment for the capital of Victoria, and upon completion will vastly improve commuter capacity and trip frequency.
BG&E has secured several important contracts as part of this massive infrastructure project. Specifically, our team is providing the design and documentation for the temporary works to allow evacuation for the new station access shaft, located next to the iconic Federation Square. This design was challenging as it involved maintaining the integrity of the existing Square’s suspected slabs during the demolition work.
Other works include design and documentation for: alternative connection details for the steel strut and water system for various shafts in CBD, and a steel suspended platform structure to support big shaft scrubbers and ventilation fan units for the city square shaft.
BG&E is also providing construction sequencing between the main rail tunnel and adjacent station box, to enable the tunnel boring machines (TBM) for the main tunnels to pass the station box before construction. For safety reasons, a connecting audit between the tunnels and station box needed to be completed prior to the TBM’s passage.
Overall, BG&E is providing temporary works design, among other services, with close to 200 packages of work delivered as at October 2021 and major works continuing into 2022.
Some of BG&E’s works comprise:
- twin nine-kilometre rail tunnels from the West of the city to the South East, as part of a new Sunbury to Cranbourne/Pakenham line;
- five new underground stations, including Arden, Parkville (under Grattan Street), State Library (at the Northern end of Swanston Street), Town Hall (at the Southern end of Swanston Street) and Anzac (under the Domain Interchange on St Kilda Road). The two stations under Swanston Street will be directly connected to the City Loop at Melbourne Central and Flinders Street stations.
- high capacity signalling to enable more frequent services; and
- upgrades for other suburban rail lines that will provide benefits across the entire network.