Opened May 2000 (2000-05) Vehicles per day 45,700 Constructed 1998 | Toll N/A Length 500 m | |
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Location Adelaide Hills south east of Adelaide Route South Eastern Freeway National Highway 1 Traffic automotive, including commuters and heavy freight | ||
South eastern freeway heysen tunnels
The Heysen Tunnels are twin tube road tunnels which carry the South Eastern Freeway 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. The tunnels were completed in 1998 and officially opened in May 2000. Each tunnel carries 3 lanes of traffic. On average, they carry a total of 45,700 vehicles per day. The maximum height of vehicles permitted in the tunnels is 5.3 metres (17 ft), the same as the Crafers and Mt Osmond interchanges. Laser height detectors monitor traffic to provide warnings to drivers before they attempt to enter the tunnel.
Contents
- South eastern freeway heysen tunnels
- Map of Heysen Tunnels South Australia Australia
- Heysen tunnels 9 news adelaide
- References
Map of Heysen Tunnels, South Australia, Australia
The tunnels are named after artist Sir Hans Heysen.