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Construction

The 6.8 kilometre Clem Jones Tunnel (CLEM7) is one of the largest infrastructure projects ever to be undertaken in Queensland.RiverCity Motorway has contracted the design and construction of the tunnel to the Leighton Contractors and Baulderstone Hornibrook Bilfinger Berger Joint Venture (LBB JV).Construction of the $3 billion toll road in commenced in September 2006. 
 
TunnellingTunnelling at Bowen Hills

Tunnelling on the Clem Jones Tunnel (CLEM7) is complete after the second tunnel boring machine broke through at Woolloongabba on 26 May 2009.

The breakthrough represents an important milestone for the CLEM7 with both 4,000-tonne boring machines (named Matilda and Florence) having completed their historic 4.3 kilometre journey from Bowen Hills to Woolloongabba.
 
The successful completion of tunnelling on the CLEM7 represents one of Brisbane’s greatest ever engineering achievements. To tunnel 4.3 kilometres through hard rock under the CBD and Brisbane River with such precision and speed is a great engineering feat.
 
Bridge construction and road wideningBridge Construction

Above the ground, bridge construction and road widening is well advanced. Work is substantially complete on all of the 18 bridges being constructed, or widened, at either end of the tunnel.

Major road widening work is complete at the northern, eastern and southern entrances to the tunnel. Remaining work includes laying of the final asphalt, line marking and installation of signage. This work will ensure motorists enjoy fast, safe and reliable access as they enter and exit the tunnel.

Fast facts
 
Tunnel 

Length 4.8 kilometre twin, 2-lane tunnels
Rock to be excavated  3.5 million tonnes
Tunnel lining segments 38,000
Concrete 280,000 cubic m

 

Tunnel boring machines 

Cost A$50 million per machine 
Diameter 12.4 metres
Length    253m
Weight 4,000 tonne
Cutters 78 tungsten carbide tipped 19 inch disc cutters
Manufacturer Herrenknecht (Germany)

 

Bridges 

Total number of bridges 18
Number of beams 350 Super T bridge beams
Length of beams 25 kilometres if placed end-to-end
Number of  decks 1,100
Biggest beam 39 metres long and weighs 75 tonne