Principal Highway
| Principal Highway | |
| highway | |
   | |
| west end | Sunset Highway (C-99) Buttercup Bay |
| east end | Discordantia Route 60 Edge City |
| length | ~940 km (~580 mi.) |
The Principal Highway was the first Crown-funded highway in Centralia. Stretching from Centralia's west coast in Buttercup Bay to the Discordantia border in Edge City, the Principal Highway was established by Princess Meredith early in her reign as a way to promote trade between various regions of Centralia.
The present-day Principal Highway exists in two segments, the West Principal Highway, designated C-1, which runs west from Queen City to the coast at Buttercup Bay, and the East Principal Highway, designated C-6 1 , which runs east from Queen City to the Discordantia border in Edge City. The two segments technically do not connect, as continuity is broken by the so-called "Honeycomb" freeway network in downtown Queen City.
While the modern alignment of the Principal Highway is a fully controlled-access freeway, the original alignment, dating back to Princess Meredith's reign, still exists in several discontinuous stretches, and is fully signed as a historic route.
Discordantia Route 60
The East Principal Highway extends eastward into Discordantia as Discordantia Route 60, which runs 220 kilometers to Eris City, the Discordantian capital.