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, Eagle On The Hill is an unbounded locality of which capital city in the Adelaide Foothills?
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 m of rock for each tunnel at an average rate of 3 m 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 m , 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.
Gepps Cross, South Australia Gepps Cross (pronounced 'Jepps Cross') is a suburb and major road intersection in the north of Adelaide, South Australia. Gepps Cross is traditionally seen as the end of the inner suburbs and the start of the outer northern suburbs, as it was home to a major abattoir (now closed) with holding yards and other open space. It is the first significant open space encountered after the North Parklands. It retains the open nature, even with warehouses, a velodrome, hockey stadium, Adelaide Raiders – a Croatian soccer club and karate training facilities.