Here is the origin of one of the roads under consideration:
The Great Central Coast Road
Until 1676 porters dominated cargo transportation in the southeast, and domestic animals dominated from 1676 until the 1720s when wheeled transportation came to dominate commercial transportation. Owing to the ever demanding economies of scale, it was only a further 80 years until wheeled traffic totally dominated the southeast east of the Blue Ridge. A nifty recapitulation indeed.
The Oxford English Dictionary (OED) reveals “way” to be an Anglo Saxon term derived almost unchanged from an Indo-European root. The OED provides an astonishing ten pages of definitions for the simple, single syllable word. Anglo-Saxon English is famously rich in one syllable words most of which can be used for every part of speech; noun, verb, adverb, etc. The downside of this is that it is difficult to obfuscate with Anglo-Saxon English (as opposed to Norman English, the language most likely to have produced the label "perfidious Albion"). For a student of old roads, though, "way" is where one starts.
These parishes he planted in market towns in the midst of dissenters. The parishes became the core of colonial legal process, and the came with "test oaths", oaths swearing loyalty to crown and Anglican church. This encouraged Anglican entrepreneurs to move into hostile districts to tax dissenter. It also ensured dissenters (except Presbyterians) would have no voice in courts or other local government offices.
As in Ireland, ambitious Anglicans quickly establish enclaves among dissenter populations (Dobbs descended from a Cromwellian officer granted a market town in Ireland). Hillsborough, for example, was a result of this maneuver, and within ten years minority rule fomented a rebellion among backcountry religious dissenters called The Regulation. One artifact of that moment is a military road suitable for carrying cannon part of which in Durham County is misnamed Cornwallis Road. It should have been called Tryon's Road after Dobbs' protege,William Tryon, the man who implemented the Irish solution in the backcountry after the demise of his mentor.
It seems likely that Dobbs had relocated North Carolina’s capitol from the mouth of the Cape Fear River to the Mouth of the Neuse River because the latter drainage contained dissident populations while the former was ruled by Anglicans and populated by Presbyterians, Anglican allies. Further, the Scots of the Cape Fear basin had emigrated to their new homes after losing the Battle of Culloden and swearing to never again take up arms against England; they were a tame lot.
Not so the Baptists and Quakers of the Neuse drainage. Dobbs strategically sited his capital to address the main challenge to his power and the power of his allies, North Carolina’s absentee landlords. Then he built a way to move an army inland, and it came to be called The Great Central Coast Road. It ran from the mouth of the Neuse to the Appalachian Mountains and Tennessee.