oc ▁the ▁road ▁travel s ▁north ▁and ▁east ▁to ▁Ch ero kee ▁then ▁north ▁and ▁east ▁to ▁a ▁j unction ▁with ▁FM ▁ 5 8 0 ▁SW ▁of ▁B end . ▁▁ ▁R M ▁ 5 0 1 ▁was ▁author ized ▁on ▁July ▁ 1 3 , ▁ 1 9 4 5 ▁as ▁FM ▁ 5 0 1 , ▁a ▁ 3 . 4 - mile ▁road ▁between ▁SH ▁ 1 6 ▁in ▁Ch ero kee ▁and ▁the ▁Salt ▁Branch ▁Road ▁in ▁San ▁S aba ▁County . ▁On ▁October ▁ 3 1 , ▁ 1 9 5 7 , ▁FM ▁ 5 0 1 ▁extended ▁west ▁to ▁Pont ot oc , ▁replacing ▁FM ▁ 1 6 4 8 , ▁and ▁FM ▁ 5 0 1 ▁was ▁changed ▁to ▁R M ▁ 5 0 1 . ▁On ▁October ▁ 3 1 , ▁ 1 9 5 8 , ▁R M ▁ 5 0 1 ▁extended ▁east ▁ 6 ▁miles . ▁On ▁September ▁ 2 7 , ▁ 1 9 6 0 , ▁the ▁road ▁was ▁extended ▁to ▁a ▁j unction ▁with ▁FM ▁ 5 8 0 . ▁ ▁FM ▁ 5 0 2 ▁ ▁FM ▁ 5 0 2 ▁was ▁designated ▁on ▁July ▁ 1 4 , ▁ 1 9 4 5 , ▁from ▁US ▁ 3 7 7 ▁sout heast ▁and ▁east ▁ 4 ▁miles ▁to ▁the ▁Mil burn ▁Road . ▁On ▁September ▁ 2 4 , ▁ 1 9 5 4 , ▁FM ▁ 5 0 2 ▁extended ▁east ▁to ▁the ▁end