Coming over a hill on a two-lane country road going 70 is a disaster waiting to happen! There could be a tractor on the road ahead or someone pulling out of a country home driveway or field etc. My drive back and forth on rural roads going from Andalusia to Florida panhandle is filled with folks passing on two lanes going up a hill you can't see over. I find myself slowing down and searching for exit strategies now more than ever before. Sucks to get a ticket but for every person going 70 on a rural road there are many more going 80+, so I understand occasionally monitoring those roads.
Both Hwy 55 and Hwy 29 south out of Andalusia are terrible most of the time with what you are talking about. Both mostly two lane once you hit the city limit sign leaving, full of farming communities and beach goers who are apparently convinced that the beach will disappear before they can get there! There have been plenty of accidents along both those stretches of roads.
Oddly, though, there are more accidents on Hwy 55 north between River Falls and Georgiana than most would expect as it is all four lane. It is also a major beach route from I-65, though.