Motorists have voted Horrocks Highway as the worst in the state, according to results released by RAA.
It was the second time the road made an appearance on the Risky Roads list, rising one position from second in 2017.
Joining it on the list was Owen Road, which was also making its second appearance.
In 2017, the road came in at fourth place but came in at fifth in the latest installment.
RAA Senior Manager Safety and Infrastructure Charles Mountain said the survey highlighted the need for ongoing maintenance along the notorious stretch.
"There were 107 casualty crashes resulting in six deaths and 156 injuries along Horrocks Highway between 2014 and 2018," Mr Mountain said.
"While the Federal and State governments have committed to a combined $55 million towards repairs, the casualty crashes and survey results highlight the need for work to be undertaken as soon as possible."
More than 1300 road users took part in the survey. Horrocks Hwy received 47 votes while Owen Rd received 22.
Uneven surface, potholes and cracks and crumbling road edges were the top three issues raised for both roads by voters.
One respondent noted that their vehicle became airborne when bumps on the Horrocks Hwy were hit.
According to report, about 1800 vehicles travel along Owen Rd between Templers and Balaklava a day.
Larger vehicles utilize the road and one respondent noted it was a risk in its current state.
"The road is extremely uneven, narrow and with semi-trailers driving it multiple times a day, it is not safe for other road users," they said.
"There is too much traffic on this road for it to be as unsafe as it it."
Both roads have had funds committed by the state government towards improvements.
Last year, $50m in funding was brought forward by the federal government to fast track work on the Horrocks Hwy.
This would be used to create overtaking lanes and to complete shoulder sealing on the stretch of road.
The state government also committed $18m for stabilisation and resealing works on Owen Rd between Owen and Balaklava, as well as on the Barrier Highway.