How do i get help with a neighbor that lives in front of me that's literley blocking right of way on our private road that in need necessary repairs.

1st- we all live on a private rd. Our elderly neighbor who lives directly in front of my house, seems to have a major issue with us 3 neighbors that live around her. She does not want anyone using her side of the road. In the past few years, she has put out cinder blocks and other objects out to center of road blocking right away causing vehicles to have to drive on my lawn to get by. we've had sheriff's and code enforcement out there so many times to which they have no jurisdiction to enforce anything because as a private road, we all own up to center point which makes it a civil matter. Now I've ran over those cinder blocks causing damage to my truck, law enforcement says they can't do anything and it's a civil matter. just this week, many of us neighbors put together founds(excluding her as she would never contribute anything-ever) so we can do very necessary repairs to major pot holes thru out the road. contractor skipped my part due to her trucks blocking the whole area. HELP