I plan to field check 880 tomorrow because I need to be up that way. I'll see if there's anything on the ground to confirm things. Given the conditions on other routes like this in the Reno area, I'm inclined to believe the start/end of the marked shoulder is the east end of the route, which would correspond to the shield I'm seeing on GSV. However, GIS sends the thing to Malapai and, in typical NDOT urban route fashion, there is no end postmile.