Police and emergency services are at the scene of a serious crash at Crystal Brook.
About 5.25am on Friday 14 April, police were called to the Augusta Highway after a truck rolled.
A helicopter retrieval time is on its way from Adelaide.
The truck is blocking the highway in both directions and diversions are in place at Venning Road and the Goyder Highway.
However any vehicles over 30m will not be able to pass through the Crystal Brook township and can only go as far as O’Shaughnessy Road.
These diversions are expected to remain in place for several hours so motorists are asked to avoid the area.
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