Description: Riddoch Highway is actually in South Australia, but for it's entire length it runs close to the Victorian border. The highway begins in Keith at Dukes Highway (A8), running through the towns of Naracoorte, Penola, Nangwarry and Mount Gambier as A66, then continuing as B66 to its termination at Port Macdonnell on the Southern Ocean.

Length: A66 runs for 211km, and B66 is just 28 km in length.

Condition: A66 is a two lane road with fairly narrow shoulders, but in good condition. Through Nangwarry and Mount Gambier the road is a four lane divided highway. It has a speed limit of 110 km/hr in the rural areas.

Heading south between Bordertown and Naracoorte. November 2004.

 

Just south of Naracoorte on Riddoch Hwy. South Australia has updated most signage in accordance with the new route system, although it can be inconsistent with some signs. Note the flourescent yellow A66. November 2004.

 

South through the timber town of Nangwarry. November 2004.

 

Heading south entering Mount Gambier along Penola Road. November 2004.

 

Heading along B66 through Mount Gambier CBD. November 2004.

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