Karoonda Highway

Karoonda Highway South Australia
Type	Highway
Length	172 km (107 mi)
Route number(s)	B55
South-west end	Old Princes Highway (B55), Murray Bridge
North-east end	Bookpurnong Road (B55), Loxton
Major settlements	Murray Bridge, Karoonda, Alawoona, Loxton
Highways in Australia National Highway • Freeways in Australia Highways in South Australia

The Karoonda Highway is a 172-kilometre-long (107 mi) state-controlled highway in South Australia linking the Murray River towns of Murray Bridge and Loxton. It was created after local councils called for the renaming of the B55 road route.

Route B55 starts at the White Hill Interchange on the South Eastern Freeway and follows the Old Princes Highway through the town of Murray Bridge and crosses the original bridge over the Murray River. The Karoonda Highway begins at Murray Bridge East. It heads north-east to the town of Karoonda, and from there, continues on to Alawoona. Thereafter it heads north to Kingston Road, where it turns east to Loxton, its north-eastern terminus. Bookpurnong Road continues on from Loxton, connecting the highway to Berri and the Sturt Highway.

In 2006, the local governments in the area, including Loxton Waikerie Council and Karoonda East Murray Council, called for the Loxton to Murray Bridge section of the B55 road route to be named Karoonda Highway, after the major town along the route. The B55 route actually extended past Loxton to Berri, which the councils initially didn't realise. By 2011, the route had been renamed Karoonda Highway from Loxton to Murray Bridge, and Bookpurnong Road north of Loxton to Berri.

In 2014, Karoonda Highway was rated as one of the worst roads in the states by South Australian motorists.

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