Its a pretty similar statistic for most rural states.
Consider that the population is lower but the ratio of people driving is much higher. Less cities, more people have to commute 30-60 minutes, etc.
Part of it is poor infrastructure, yeah(the other southern rural states with similar stats track a better record comparatively based on quality of infrastructure by my own personal anecdote of having driven/lived in them), but it’s just predominantly the ratio of drivers to non drivers as the key factor.