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May 2015
Castle Hill
CONSTRUCTION UPDATE
Excavation of the station area continues
Welcome to our Castle Hill quarterly construction update. These newsletters are designed to keep you
informed of project activities and community involvement in your local area. The $8.3 billion North West
Rail Link is Australia’s biggest public transport project currently under construction and a priority
infrastructure investment for the NSW Government. Thiess John Holland Dragados has been contracted
to build the tunnels and civil works for five of the eight new stations and two service facilities.
Excavation of the rail crossover cavern is complete
CROSSOVER CAVERN EXCAVATED
A significant milestone has been achieved at the Castle Hill Station
site with excavation of the rail crossover cavern completed. The
cavern has taken about six months to excavate using a road header,
dozers and excavators.
About 14,400 tonnes of shotcrete was sprayed, 420 tonnes of
mesh installed and 1820 rock bolts drilled into the walls to support
the structure. The 115,000 tonnes of material removed from the
cavern was transported offsite to be re-used in land developments
across western Sydney.
The cavern is located at the eastern end of the site and measures
160 m long, 23 m wide and up to 17 m high. It is designed to allow
trains to cross from one track to the other.
Excavation of the station area is continuing and about 60 per cent
complete, while the arched tunnel sections at the site’s western
end are also being permanently lined with concrete. Works at the
Castle Hill site are underway around the clock to prepare for the
arrival of the tunnel boring machines (TBMs), called Elizabeth and
Florence, as they pass through on their way to Cherrybrook.
The next phase of works involves waterproofing the cavern and
installing a permanent concrete lining on the walls. About 22,113
tonnes of concrete will be needed to form the lining; this amount
would fill about three Olympic-sized swimming pools.
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Tunnelling Works
Bella Vista
Norwest
Showground
Castle Hill
Cheltenham Services Facility
Cherrybrook
Epping
THREE MONTH LOOK AHEAD
JUNE
•Installing waterproofing and permanent concrete lining within the cavern and arched tunnel sections
•Continuing excavation of the station area to reach final depth and installing ground support in the station area
•Removing excavated material from the site
JULY
•Continuing excavation of the station area and installing ground support
•Removing excavated material from the site
•Completing lining works in the cavern and arched tunnel sections
AUGUST
•Finalising excavation works in the station area
WHERE ARE THE
TUNNEL BORING MACHINES?
BEAR COTTAGE WELCOMES
SELF-REFERRALS
TBM1 Elizabeth and TBM2 Florence are busily making their way
Thiess John Holland Dragados is raising
from the Norwest Station site towards Showground. Shortly
funds, while delivering the NWRL project,
after Elizabeth breaks through at Showground, that site will start
to support Bear Cottage’s important work.
supporting the tunnelling machines as they head towards Castle Hill
and Cherrybrook. Currently their support site is located at Bella Vista.
If your family has a child with a terminal
condition, Bear Cottage can provide
respite and palliative care in a homelike
environment. Bear Cottage at Manly is the
only children’s hospice in NSW.
If you would like to find out more about Bear Cottage please visit
www.bearcottage.chw.edu.au.
Elizabeth breaks through into the Norwest site
The other two machines, TBM3 Isabelle and TBM4 Maria, are also
working hard as they tunnel between Cherrybrook and Epping.
To make a complaint or
to get more information
Call 1800 019 989
Email tunnelling@northwestrail.com.au
Visit the Community Information Centre,
Shop 490, Castle Towers Shopping Centre,
Castle Hill (entrance on Old Castle Hill Road)
www.northwestrail.com.au
Florence undergoes maintenance while resting at Norwest
You can track the progress of all four tunnel boring machines at
www.northwestrail.com.au or visit the Community Information
Centre at the Castle Towers shopping centre, just inside the Old
Castle Hill Road entrance (Shop 490).
Stay up to date with tunnelling activities
Register today for community email updates
at tunnelling@northwestrail.com.au.
Like us on Facebook at
www.facebook.com/NorthWestRailLink.
Printed on BJ Ball – Ecostar Gloss
NWRLTSC-TJV-031051-CSH-SH-NEW
1800 019 989 northwestrail.com.au
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