Gribblenation

California State Route 243 is a 29.63-mile State Highway which begins in San Gorgonio Pass in the city of Banning at Interstate 10.  From Banning the alignment of California State Route 243 climbs south into San Jacinto Mountains via the Banning-Idyllwild Panoramic Highway.  California State Route 243 passes through the community of Idyllwild before reaching a southern terminus at California State Route 74.  Banning-Idyllwild Panoramic Highway was completed during 1910 and briefly served as Riverside County Route R1 before being becoming the second California State Route 243 during 1970.   Part 1; the history of the California State Route 243 and the Banning-Idyllwild Panoramic Highway The current California State Route 243 (CA 243) is the second highway to carry the numbering designation.  The original CA 243 was a reassignment of what had been Legislative Route Number 170 (LRN 170) and during the 1964 State Highway Renumbering.   LRN 170...