Expanding the subject here a little, the point from Delaware Water Gap about "not clinchable beyond the park boundary since they're county roads" is causing me some indigestion when what's currently mapped in Utah is checked against it.
Kolob Terrace Road, based on pavement changes and signage, appears to be NPS maintained only within the bounds of the park. Outside the park it's a county road. This means maintenance changes four times and there are two discontiguous segments of NPS maintenance.
Precedent established with
NPS 602 and
NPS615 suggests this should, at minimum, be truncated to only the NPS-maintained segments. However, given that this doesn't connect to any of Zion's prime attractions, I am inclined to simply 86 the whole thing. That said, if the whole thing is kept, it needs to be updated to reflect a realignment at the south end.
Needles Scenic Drive as mapped has substantial mileage outside of Canyonlands National Park. According to
this official map of San Juan County, the entire thing even within the park is San Juan County route 1291. However... NPS-spec signage is present along the road inside the park.
I don't think keeping the whole thing is right here either, but question then is is it consistent with criteria 5 to keep only the portion within the park when that would leave it orphaned. Depends on how you interpret "link with other roads" (note it does not say link
directly with other roads, so this may still be okay).
Islands In The Sky Scenic Drive has a significant length outside the park boundary but has NPS-spec signs from the beginning and no pavement change at the park boundary so this is
probably okay.
Everything else is fully within park boundaries and therefore should be good, though I do need to fix Cub Creek Road so it matches the end of UT 149...