Building Anzac Station
Construction of Anzac Station is now underway on St Kilda Road.
The station will be built via a cut and cover method, using the ‘top down’ approach.
The walls of the station will first be built into the ground through a series of diaphragm walls, or D-walls. Once the walls of the station are set, excavation equipment will then dig out the top few metres of the station box. A new permanent concrete slab is then poured at this level, forming the roof of the station box. Once the roof is in place, a temporary acoustic shed will be installed over the northern end of the station box, excavation of the station will take place 24/7 under the roof slab and acoustic shed.
Anzac Station will also play a key role in supporting the project's construction activities south of the Yarra River.
Tunnel boring machines (TBMs) will be launched from Anzac Station towards the eastern tunnel entrance in South Yarra, they will be retrieved and taken back to Domain, before being re-launched and tunnelling towards the new underground station at the southern end of Swanston Street.
Key construction activities for Anzac Station include:
- Tree protection and removal.
- Relocation of underground services such as water, sewerage, gas, power and telecommunications.
- Establishment of the tunnelling support site at Edmund Herring Oval.
- Reconfiguration of St Kilda Road to allow traffic, trams and cyclists to keep flowing around the construction site.
- TBM launch and support site.
- Excavation of the station box and construction of a diaphragm wall.
- TBM launch.
- Structural works including the station entrance connections.
Construction traffic routes for the St Kilda Road precinct aim to move trucks and other construction traffic between the site and Kings Way / CityLink as directly as possible.
What we are doing
Construction works are continuing within the St Kilda Road site throughout early 2019 and will include:
- Ongoing site establishment works.
- Northern section station box construction.
- Southern section station box construction.
- High voltage cable connection.
- Geotechnical investigations and soil sampling.
- Asphalting works.
- Traffic barrier installation.
Works to set up the Tunnel Boring Machine support site on Edmund Herring Oval will continue until April 2019.
Station box construction
Station box construction activities are continuing in the northern and southern sections of the Anzac Station box.
Northern section station box activities
- Station box excavation works which commenced in January will continue during February 2019. These works include the demolition of the road surface and redundant tram rail.
- Demolition of the guide walls, hydro demolition of the roof tie-in points on the D-walls and breaking back the central piles.
- Following the demolition of guide walls, roof slab construction will commence. This includes form work, steel fixing and concrete pouring.
- Traffic barrier relocation to allow access for concrete truck access (refer map for location).
Southern section station box activities
- Central piling will continue throughout February.
- D-wall installation works will continue throughout February and March.
- Establishment of a spoil bay in Albert Reserve.
- Dust will be managed in accordance with Metro Tunnel Project’s Environmental Performance Requirements.
Installation of covered scaffold walkway at 400 St Kilda Road
Guide wall works in the southern section of the station box were completed during January. D-Wall construction will commence in early February. Due to the proximity of these works to the footpath outside 390 St Kilda Road the team have re-installed the covered walkway which was previously in place at the same location.
Due to the narrower footpath outside 400 St Kilda Road, a scaffold-style covered walkway will be constructed in early February to provide overhead protection whilst the station walls are built.
The scaffold will be installed using a small crane and at times pedestrian diversions will be in place. The project team will provide notification closer to the date of installation.
Signage and traffic controllers will be in place to ensure the safety of pedestrians. Please take care when moving within the area.
Geotechnical investigations and soil sampling works are continuing in the Domain precinct to assess ground and environmental conditions. Existing groundwater monitoring wells may be accessed to measure groundwater levels.
This will require up to two workers accessing the wells for approximately 10 minutes.
Edmund Herring oval tunnel boring support site set-up
Activity will continue to increase at Edmund Herring Oval with both preparatory and structural works being undertaken until April 2019.
These works will include:
- Construction of a small retaining wall.
- Drainage installation.
- Ground preparation works and laying of foundations/slabs.
- Construction of roads within the site.
- Installation of a pipe rack and gantry.
- Erection of structural walls for TBM support facilities.
Construction time frames
It is estimated that construction activities in the Anzac Station precinct will take around five years. Surface disruption is expected to be shorter than the overall construction time. Project wide rail systems installation will occur after this.
The Metro Tunnel is on track to be completed by 2025, which accounts for construction works above and below ground, tunnels and stations fit-out, as well as installation and testing of critical safety systems and the high capacity signalling which needs to be integrated with existing network systems.
The estimated project timelines are due to the scale and complexity of the Metro Tunnel construction, along with Melbourne's challenging ground conditions. Rail Projects Victoria (RPV) and the construction contractors will work to deliver the project to Victorians as early as possible while maintaining the highest safety and quality standards.