It was added by the TIGER import, and while it did/does exist, the geometry was so bad that it cannot be tolerated. 
(Note that it does exist as power=minor_line, not power=line like the import tagged it)
Someone improved a part of the line (fixed alignment, added poles), but well just a part. The unfixed was where you created the note for. I deleted that unfixed/low quality part now, so there is no longer an issue here now.