| Type: | highway |
| Road Name: | Karoonda Highway |
| State: | sa |
| Length: | 172 |
| Route: | B55 |
| Direction A: | Southwest |
| Direction B: | Northeast |
| Coordinates A: | -35.116°N 139.307°W |
| Coordinates B: | -34.4526°N 140.5708°W |
| Pushpin Label Position A: | bottom |
| Pushpin Label Position B: | top |
| End A: | Old Princes Highway |
| End B: | Bookpurnong Road |
| Exits: | |
| Region: | Murray and Mallee[1] |
Karoonda Highway is a 172adj=midNaNadj=mid 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.
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. Most of the route is close to the former Loxton railway line.
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.[2] [3] [4] 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.[5] [6]
In the mid-2010s, the body of a little girl was found next to the highway and after a few months, authorities stated that the body was that of Khandalyce Pearce.