I'm not versed in the vagaries of state PUC rules, but most have a list of allowable expenses for inclusion in the "cost to deliver" electricity rates. In Oregon they can expense maintenance of right of ways, but it's a fixed amount. Like, the total for maintenance is capped, and how much they do is proportional to the cost per mile. They also have to maintain the entire network, and not just the easy bits. Indiana might be different, as might Maine. I do know CMP hires local ROW maintenance crews.