Riddoch Highway is a rural highway in south-eastern South Australia, designated as route A66 between Keith and Mount Gambier, with the remainder between Mount Gambier and Port MacDonnell designated as route B66. It is named after John Riddoch, the first white settler landholder and vigneron in Coonawarra.
Route
The Riddoch Highway 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.[3]It passes through grazing and cereal-growing land, horticultural and vineyards (within the following wine regions – Padthaway, Wrattonbully, Coonawarra and Mount Gambier), and plantation timber, predominantly pinus radiata.[4]
Safety
The Royal Automobile Association of South Australia has rated the highway at 5/10.[5]
Major intersections
| LGA[6] | Location[1][3] | km[1] | mi | Destinations | Notes |
|---|---|---|---|---|---|
| Tatiara | Keith | 0.0 | 0.0 |  Dukes Highway (A8) – Adelaide, Tailem Bend, Bordertown, Melbourne | Northern terminus of highway and route A66 |
| Naracoorte Lucindale | The Gap | 83.5 | 51.9 |  Bordertown–Naracoorte Road (B57) – Bordertown | |
| Naracoorte | 109 | 68 |  Wimmera Highway (C240) – Hynam, Edenhope, Horsham, Marong | Continues into VIC as route B240 along Wimmera Highway eventually to Marong | |
| Wattle Range | Glenroy | 141 | 88 |  Edenhope Road (C212) – Edenhope | Continues into VIC as route C212 along Edenhope-Penola Road eventually to Edenhope |
| Penola | 159 | 99 |  Casterton Road (C198) – Casterton | Continues into VIC as route C198 along Casterton-Penola Road eventually to Casterton | |
| Mount Gambier | Mount Gambier | 210 | 130 |   Princes Highway (A1 east, B1 west) – Millicent, Kingston SE, Portland | Route transition: A66 north, B66 south |
| Grant | Port MacDonnell | 238 | 148 | Sea Parade – Cape Northumberland | Southern terminus of highway and route B66 |
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See also
References
- ^ a b c Google (6 June 2022). "Riddoch Highway" (Map). Google Maps. Google. Retrieved 6 June 2022.
- ^ "Location SA Map viewer with regional layers". Government of South Australia. Retrieved 16 June 2022.
- ^ a b "Location SA Map viewer with suburb layers". Government of South Australia. Retrieved 16 June 2022.
- ^ Longbottom, Mardi; Maschmedt, David and Pichler, Markus (2011), Unearthing viticulture in the Limestone Coast (PDF), p. 12, ISBN 978-0-646-56744-0, archived from the original (PDF) on 6 November 2014, retrieved 5 November 2014
{{citation}}: CS1 maint: multiple names: authors list (link) - ^ "roadwatch report – riddoch highway" (PDF). RAA. September 2006. Retrieved 16 October 2007.
- ^ "Location SA Map viewer with LGA layers". Government of South Australia. Retrieved 16 June 2022.
External links
Road infrastructure in South Australia | ||
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| Outback tracks | ||