Riddoch Highway

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Riddoch Highway

South Australia
Riddoch Highway SA.jpg
The Riddoch Highway near Padthaway
Riddoch Highway
Australia South Australia location map.svg
Red pog.svg
North end
Red pog.svg
South end
Coordinates
General information
TypeHighway
Length239 km (149 mi) [1]
Route number(s)
  • AUS Alphanumeric Route A66.svg A66 (1998–present)
    (Keith–Mount Gambier)
  • AUS Alphanumeric Route B66.svg B66 (1998–present)
    (Mount Gambier–Port MacDonnell)
Major junctions
North endAUS Alphanumeric Route A8.svg Dukes Highway
Keith, South Australia
 
South endSea Parade
Port MacDonnell, South Australia
Location(s)
Region Limestone Coast [2]
Major settlements Padthaway, Naracoorte, Coonawarra, Penola, Tarpeena, Mount Gambier
Highway system

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.

Contents

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] miDestinationsNotes
Tatiara Keith 0.00.0AUS Alphanumeric Route A8.svg Dukes Highway (A8) – Adelaide, Tailem Bend, Bordertown, Melbourne Northern terminus of highway and route A66
Naracoorte Lucindale The Gap 83.551.9AUS Alphanumeric Route B57.svg Bordertown–Naracoorte Road (B57) – Bordertown
Naracoorte 10968AUS Alphanumeric Route C240.svg Wimmera Highway (C240) – Hynam, Edenhope, Horsham, Marong Continues into VIC as route B240 along Wimmera Highway eventually to Marong
Wattle Range Glenroy14188AUS Alphanumeric Route C212.svg Edenhope Road (C212) – Edenhope Continues into VIC as route C212 along Edenhope-Penola Road eventually to Edenhope
Penola 15999AUS Alphanumeric Route C198.svg Casterton Road (C198) – Casterton Continues into VIC as route C198 along Casterton-Penola Road eventually to Casterton
Mount Gambier Mount Gambier 210130AUS Alphanumeric Route A1.svgAUS Alphanumeric Route B1.svg Princes Highway (A1 east, B1 west) – Millicent, Kingston SE, Portland Route transition: A66 north, B66 south
Grant Port MacDonnell 238148Sea Parade – Cape Northumberland Southern terminus of highway and route B66
  •        Route transition

See also

Australia road sign W5-29.svg Australian Roadsportal

References

  1. 1 2 3 "Riddoch Highway" (Map). Google Maps . Retrieved 6 June 2022.
  2. ↑ "Location SA Map viewer with regional layers". Government of South Australia . Retrieved 16 June 2022.
  3. 1 2 "Location SA Map viewer with suburb layers". Government of South Australia . Retrieved 16 June 2022.
  4. ↑ 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)
  5. ↑ "roadwatch report – riddoch highway" (PDF). RAA. September 2006. Retrieved 16 October 2007.
  6. ↑ "Location SA Map viewer with LGA layers". Government of South Australia . Retrieved 16 June 2022.
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