I think the horizontal lines to the east of that location may have been caused by panning in potlatch 2. Instead of panning, someone clicked a section of road, and shifted it a lot without realizing it... then panned west to do their editing.
by panning, I mean, clicking on the map's background, shifting the map.
.. or it could be a computer hardware bug. Maybe a bit got flipped in the render process and the computer rendered the road as if it were shifted 20 miles to the east.
OpenStreetMap
Discussion
Comment from z-dude on 27 January 2011 at 18:46
I think the horizontal lines to the east of that location may have been caused by panning in potlatch 2. Instead of panning, someone clicked a section of road, and shifted it a lot without realizing it... then panned west to do their editing.
by panning, I mean, clicking on the map's background, shifting the map.
Comment from z-dude on 27 January 2011 at 19:01
.. or it could be a computer hardware bug. Maybe a bit got flipped in the render process and the computer rendered the road as if it were shifted 20 miles to the east.