South Australian Government has announced that upgrade works have started on the North East Road and Sudholz Road intersection in a move to improve safety.

Road safety minister Tony Piccolo said that the intersection has a poor safety record.

"About 73,000 vehicles pass through the intersection every day," Piccolo said.

"Between 2007 and October 2014, there have been 73 casualty crashes and sadly one fatality at the intersection, as well as 162 crashes that have led to property damage."

"Eliminating a right-turn crash is important because these crashes can be some of the most severe."

Following 18 months of community engagement with local council, businesses, residents and seven community workshops, the works are said to have started.

For the upgrade, the Motor Accident Commission Road Safety Fund will provide a $7.7m investment and works are expected to be completed by October, subject to weather conditions.

Motor Accident Commission Road Safety general manager Michael Cornish said investing in improvements at intersections with a significant crash history is a good outcome for road safety.

"Eliminating a right-turn crash is important because these crashes can be some of the most severe, leading to serious injuries with life-long consequences and also fatalities," Cornish said.

Based on an internal review by the Australian Department of Planning, Transport and Infrastructure it was revealed that nearly 35% of the casualty crashes between 2007 and 2012 at the intersection had involved drivers turning right out of Blacks Road onto North East Road.

The scheme proposed by the government is expected to eliminate the right turn movement at the location and avoids crashes.

Major turn movements are set to provide through the upgrade of Blacks Road on south and also by providing further set of traffic signals on Sudholz Road.