The Heysen Tunnels are twin tube road tunnels which carry the Adelaide-Crafers Highway under Eagle On The Hill in the Mount Lofty Ranges in South Australia. The tunnels were excavated using a tunnelling machine normally used in heavy-duty mining operations which tunnelled through 500 metres of rock for each tunnel at an average rate of 3 metres per day.[1] Each tunnel carries 3 lanes of traffic.
The tunnels are named after artist Sir Hans Heysen.
References
- ^ "Heysen Tunnels Construction". Government of South Australia, Department for Transport, Energy and Infrastructure. 13 August 2004. http://www.ezyreg.sa.gov.au/transport_network/projects/adel_crafers/heysen.asp. Retrieved on 2007-07-14.
Coordinates: 34°58′27″S 138°40′34″E / 34.9740886°S 138.6760718°E
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