NC: NC-74 'northern' end

[rickmastfan67]

Currently, NC-74 & US-52 share 'Separate' carriageways for a short distance thru the NC-65 interchange north of the major Winston-Salem Loop interchange.  Since I-74 will be taking over NC-74 & overlay US-52 in this area, we need to properly fix this before label issues become a major hassle when US-52's exit numbers convert to I-74 mileage 'soon'.

Changes to NC-74 that are needed as follows:
1) Extend the route north to north of the NC-65 interchange to the current start of the split carriageways.  This is currently where US-52 got new 'separate' Exit 119 signage, signifying it's being completely separate from Exit 117, & justifies NC-74 (I-74) carriageways are a completely separate entity from US-52's.  This should IMO, become the 'new' 41 point, since the PR from the US-52 renumber says it will become this.
    N.C. 74 (Winston-Salem Northern Beltway): Old Exit 119 → New Exit 41​
2) Add a shaping point here to break a false multiplex with US-52 since we need a graph connection with NC-65 in #3.
3) Add in a point for the NC-65 interchange here.  While, all the main ramps for it, only connect to the US-52 carriageways, there is a single solo ramp that directly connects to NC-74, justifying a graph connection with both NC-65 & US-52 here, as the center point for it all should be the same. As for the label in NC-74's file for this interchange, we could do either 118(52) or 41B, up to you.
4) Add a shaping point here to break a false multiplex with US-52 since we need a graph connection with NC-65 in #3.
5) 'current' 41 -> 41A

Changes to US-52 as follows:
1) Add Exit 119 for where the split with NC-74 happens.  No other changes will be needed, as all the multiplex breakage points will be in NC-74's file.

Changes to NC-65 as follows:
No changes needed till I-74 comes along in this area IMO.

Changes to NC I-74FutPil:
I would recommend shortening the route to the 'new' US-52 Exit 119 point, keeping the southern ending label 'as-is' & hiding the 'NC65' label under it.  Since the 'Future Interstate' files are on their death beds, this is the best option IMO till I-74 finally takes over this area and kills this file.

[mapmikey]

There's even more to it.  Here is what I did:

NC 74 WB at the signed exit 41A-B is actually where its interchange with I-274 (currently SR 9002) is.  I placed a point where 74 crosses the 9002 carriageway and called it 41A.  The point labeled 41 was removed from NC 74's file.  I placed a point where 52-74 split and called it 41.  I gave 74 a point at the NC 65 overpass (same coordinates as US 52's point) and called it 41B, which is what the exit for NC 65 (ignoring that it technically puts you on 52 north) from NC 74 WB is signed as.  I placed a shaping point on 74 between 41 and 41B to break the 52 concurrency.

I added exit 119 to us 52's file where NC 74 ties in.

I changed I-74 Future as you described...