Sections of the Sturt Highway will undergo five nights of construction work, weather permitting, to correct undulations from this Sunday, May 26.
The predicted $505,000 works will be undertaken on various "worst sections" of the Sturt Highway, near Gomersal Road turn off, as highlighted this month by Transport Minister Stephan Knoll.
Sections to be improved are located between about one kilometre north of the bridge over Main North Road, near Gawler, and to about 1.4km south of Ahrens Road, Shea-Oak Log.
The night works will occur between 7pm and 6am and are expected to be completed by Thursday, May 30.
Line marking will be undertaken following the works.
This means reduced speed limits and lane closures will be in place with signage to alert motorists to the traffic changes.
Minister Knoll's office advises road users to observe the signage and to follow the direction of traffic management staff.
There will be no impacts to business access, the Minister's office added.
"I would like to thank motorists for their patience leading up to, and during, these works," Minister Knoll said.
"Drivers can look forward to a safer and improved ride quality once these works are complete."