I will mow it maybe once a year if it gets really bad. I do spray some roundup along the edges.
I know this is about mowing but...I live on a dirt road and the county hardly ever scrapes it. It gets pretty bad after some hard rains. In the past few years I have noticed more traffic, (from more people settling in) on our road. I have taken the box blade at times and smoothed out the real bad wash outs. But I do not do that anymore. It's the liability issue.
I have seen some bad accidents from people driving way too fast on this road. Leaving it rough slows most of them down...(except the kids and their trucks). I would be afraid of a lawsuit if an accident happened and someone said that I had been out working on or along the road.
Same goes for mowing and grass in the road, etc. Times have changed...I am still the same person...just a little more hesitant nowdays.