This discussion made me curious, so I started poking around the UK, where OSM's classifications are derived from.

It's not common, but I can find a few locations in the UK (where it is legally defined what segments of road are motorway, unlike in the US) where a motorway ends at an at-grade junction. See M4's west end and M181's north end for examples.

Granted, these are roundabouts, but roundabouts are a type of intersection.

I'm not sure I follow why the last interchange (where the physical geometry of the road does not change) is a more logical point for the classification change than the first intersection (where the physical geometry of the road absolutely does change).

Nonetheless, a change in designation at the Apache St interchange would still make more sense than labeling the whole thing trunk.

I can appreciate that there are two intersections at the north end of the road, and if you look at my changeset you may note I left that section as trunk.

But, why would two intersections at one end, spaced ~1/4 mile apart, disqualify the entire remaining 2+ miles of the road which are built to full freeway standards from being given the corresponding "motorway" classification?

There is considerable precedent for this, including the adjacent Gilcrease Expressway which is part motorway and part trunk.

Why indeed. Can confirm personally this was signed as only I-840 as far back as January 2017. I went ahead and removed the deprecated TN 840 designation

changeset/58188274

Okay it's been a month and no further comments. I count six in favor of "Creek Turnpike" being the primary name and one in favor of "Liberty Parkway". Can we consider there to be a consensus to this effect at this point?

...but to even get to that point of seeing the sign that says "Liberty Parkway" you will have passed under overhead guide signage that says "Creek Turnpike", such as this one: https://www.flickr.com/photos/watuzi/16990876093/in/dateposted-public/

If I am a driver unfamiliar with the area looking for "Liberty Parkway" I am not going to find it since there are absolutely zero signs for a road by that name until you are already on it. The signs pointing to the road, which I will see first and make a decision of where to exit or turn based on, all say "Creek Turnpike". Every last one of them.

And while you are correct that drivers may be seeking some level of reassurance after entering the road, that is not the intended purpose of the "Liberty Parkway" signs. If it were, would they not logically show the same name as all the other, larger, guide signage that drivers will see first?

Based on the various evidence all parties have provided, name=Creek Turnpike and alt_name=Liberty Parkway seems most appropriate to me. "Creek Turnpike" is not a local nickname, it is what all of the primary guide signage says. "Liberty Parkway" only appears on one or two small roadside signs of exactly the sort honorary names like "State Trooper John Smith Memorial Overpass" and whatnot are typically posted with. Motorists do not navigate by these signs. If someone sees "Liberty Parkway" on a map it is going to mislead them since that is not what any of the signs they will be navigating by will say.

Is there an official DWG decision about this online anywhere? I concur with US 266 and baveggies - the road is quite clearly named "Creek Turnpike" on all major signage as well as in general practice. The name "Liberty Parkway" is on only one sign (that I am aware of) - this should be the alt_name, not the other way around.