▁ ▁See ▁also ▁Ol ivos ▁( disambiguation ) ▁ ▁Category : M as cul ine ▁given ▁names <0x0A> </s> ▁Illinois ▁Route ▁ 1 8 5 ▁is ▁an ▁east – west ▁state ▁road ▁in ▁the ▁south - central ▁portion ▁of ▁the ▁U . S . ▁state ▁of ▁Illinois . ▁Its ▁western ▁termin us ▁is ▁in ▁Taylor ▁Spr ings ▁at ▁Illinois ▁Route ▁ 1 2 7 , ▁and ▁the ▁eastern ▁termin us ▁is ▁at ▁Far ina ▁at ▁Illinois ▁Route ▁ 3 7 . ▁This ▁is ▁a ▁distance ▁of ▁. ▁ ▁Route ▁description ▁ ▁Illinois ▁ 1 8 5 ▁runs ▁ge ograph ically ▁north west - s out heast ▁through ▁south - central ▁Illinois . ▁It ▁over laps ▁both ▁U . S . ▁Route ▁ 4 0 ▁and ▁U . S . ▁Route ▁ 5 1 ▁through ▁the ▁city ▁of ▁V and alia . ▁ ▁History ▁ ▁S BI ▁Route ▁ 1 8 5 ▁originally ▁ran ▁from ▁Bl uff ▁City ▁to ▁Far ina . ▁In ▁ 1 9 4 9 , ▁it ▁was ▁extended ▁north west ▁to ▁Taylor ▁Spr ings . ▁ ▁Major ▁Inter sections ▁ ▁References ▁▁▁ 1 8 5 ▁Category : Transport ation ▁in ▁Mont gom ery ▁County , ▁Illinois ▁Category : Transport ation ▁in ▁F ay ette ▁County , ▁Illinois <0x0A> </s> ▁This ▁article ▁is ▁about ▁diplom acy . ▁For ▁the ▁Blue ▁O yst er ▁Cult ▁album , ▁see ▁Secret ▁Tre aties ▁ ▁A ▁secret ▁treat y ▁is ▁a ▁treat y ▁( intern ational ▁agreement ) ▁in ▁which ▁the ▁contract ing ▁state ▁parties