Well, it's signed as "TO US 50" going north, but "Truck Route" "CO 109" going south. I'm fine adding it in, but I think I would add it in as CO 109 Truck instead of CO 109 Spur because
1. That's the only banner we have in the field, and it would make things a
2. Because of CO's weird way of inventorying routes (any segments of numbered routes are A, B, C, D, etc., the letter has nothing to do with what kind of route it is), we don't know if it was intended to be a spur or not, so there's nothing official to fall back on.