Riddoch Highway

Riddoch Highway
Length	239 km (149 mi)
Direction	North-South
From	Dukes Highway, Keith, South Australia
via	Padthaway, Naracoorte, Coonawarra, Penola, Tarpeena, Mount Gambier
To	Cape Northumberland, Port MacDonnell, South Australia
Allocation	Keith - Mount Gambier Mount Gambier - Port MacDonnell
Major junctions	Bordertown-Naracoorte Road, Wimmera Highway, Edenhope-Penola Road, Princes Highway

The Riddoch Highway connects Keith, Naracoorte, Mount Gambier and Port MacDonnell in southeastern South Australia.

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The Riddoch Highway in south-eastern South Australia branches from the Dukes Highway at Keith and travels south through Padthaway, Naracoorte, Penola, Nangwarry, Tarpeena, and Mount Gambier to Port MacDonnell and nearby Cape Northumberland.

The highway has been designated as State Route A66 between Keith and Mount Gambier. The remainder, between Mount Gambier and Port MacDonnell has been labelled State Route B66, although this is not officially known as the Riddoch Highway.

It passes through grazing and cereal-growing land, horticultural and vineyards (including Padthaway, Wrattonbully and Coonawarra wine regions), and plantation timber, predominantly pinus radiata.

The Royal Automobile Association (RAA) has rated the highway at 5/10.

The Riddoch Highway is named after John Riddoch, the original landholder and vigneron in Coonawarra.

See also

• Highways in Australia
• List of highways in South Australia

External links

• South Australia Central
• South Australian Tourism Commission
• Transport SA