A woman is suing the Queensland government and a regional council for more than $1 million, claiming a stretch of road is to blame for serious injuries suffered in a crash.

Pamela Algie Sedgmen was in her Jeep Cherokee Sport when it rolled off the Mount Lindesay Highway and 50 metres down an embankment, 19 kilometres south of Rathdowney.

Pamela Sedgmen's Jeep after it rolled off the Mt Lindesay Hwy in 2012.

She claimed the crash caused spinal injuries, head injuries resulting in cognitive defects, mild anxiety and chronic depression.

In Supreme Court documents lodged last month, Ms Sedgmen said she was driving on the road about 6am on February 24, 2012.