4.6-km tunnels in the city of Brisbane. Australia.
The contract includes the design, construction, operation and maintenance for 10 years of 2 parallel tunnels measuring 12 metres in diameter and approximately 4.6 km long, linking the Centenar Motorway with the Inner City Bypass.
The tunnels were constructed with two tunnelling machines, measuring 12.40 m in diameter, with a length of 110 m each. During their construction, world speed records were achieved during the excavation with the tunnelling machines through ACCIONA’s continuous innovation at all stages of the project.
The Legacy Way motorway has been awarded the following prizes:
To improve traffic and connections with metropolitan areas and the airport of the city of Brisbane, the third largest city in Australia.
Streamlining traffic, reducing travel time by more than half.
"Furthermore, over 1,000 tons of CO2 and more than 187,000 lorry journeys were prevented thanks to the use of the conveyor belt system that transported more than 1,000,000 m3 of rubble and material."
2013 International Tunnelling Project of the year (>$500k)