lmum I think you uncovered a massive fake service road spammer. I looked at this change set and thought the same thing. Then I looked around the area and found more and more roads that seem to not exist. Then I checked out their past edits, they have added thousands of "service roads" that don't exist all over the US.

I don't know why, but seems like automated edits that are all bad. Almost every changeset I looked at and they have 13k was wrong or completely made up.

This is a person or bot severely damaging OSM data.