The speed limit on the Cleve-Kimba Road is set to return to 110 km/h following a commitment to upgrade the road.
The state government this week announced an $18-million road works package, which includes shoulder reconstruction and sealing on the Cleve Road.
Works are now scheduled to begin in early 2020.
The announcement came after the federal government committed to bringing forward their share of funding for six road projects across the state.
The work will be co-funded by the state and federal government as part of the South Australian Rural Roads Package with the aim of fulfilling the state government's election commitment to reinstate the 110km/h limits.
It's about time they started looking after us.Dean Johnson
The Cleve Road was one of eight across the state to be reduced to 100 km/h in 2017 after it was deemed high-risk due to road crash statistics.
Kimba district mayor Dean Johnson said the commitment was a response to "strong advocacy" by the Cleve and Kimba district councils.
He said the original decision to reduce the speed limit was to avoid necessary maintenance of the road and it was positive to see investment put back into regional routes.
"It's about time they started looking after us," he said.
He said increasing the speed limit was "absolutely vital" because it was an important strategic road in the district and it passed through sections of poor phone reception.
He said the lack of phone reception meant investing on the road was even more important to keep travellers safe.
"These important roads without phone coverage, it's even more vital," he said.
The state government is also set to honour a commitment to upgrade the Birdseye Highway between Cowell and Cleve in the new year.
In 2018, $2.5 million was allocated for edge sealing along the road, which is now the route for trucks travelling between the new T-Ports bunker site at Lock and the Lucky Bay Port.
The commitment came after advocacy from the Cleve District Council and T-Ports in an effort to manage the increased traffic safely.
A Department of Planning, Transport and Infrastructure spokesperson said an updated work schedule recently provided by the contractor indicated works on the road would start in late January.
The spokesperson said works had been delayed "due to the high impact it would have had to grain carting and the associated businesses in the area".