SS R ), ▁and ▁unsigned ▁state ▁roads ▁( SR ). ▁State ▁roads ▁are ▁fe eder ▁roads ▁that ▁provide ▁additional ▁inter conne ctions ▁between ▁signed ▁routes , ▁or ▁long ▁entrance / exit ▁ram ps ▁to ▁express ways . ▁Ro ads ▁class ified ▁by ▁the ▁Connecticut ▁Department ▁of ▁Transport ation ▁as ▁state ▁roads ▁are ▁given ▁an ▁unsigned ▁number ▁design ation ▁between ▁ 5 0 0 ▁and ▁ 9 9 9 , ▁with ▁the ▁first ▁digit ▁depending ▁on ▁which ▁Main ten ance ▁District ▁the ▁road ▁is ▁primarily ▁located ▁in . ▁Below ▁is ▁a ▁list ▁of ▁the ▁state ▁roads ▁that ▁are ▁class ified ▁as ▁ar ter ial ▁roads . ▁ ▁State ▁Ro ads ▁ 5 0 0 - 5 9 9 ▁ ▁Ro ads ▁mainly ▁in ▁the ▁Hart ford ▁area ▁( D istrict ▁ 1 ). ▁State ▁Road ▁ 5 0 0 ▁– ▁I - 8 4 ▁Exit ▁ 5 6 ▁r amp ▁to ▁Governor ▁Street ; ▁stub ▁fre ew ay ▁for ▁cancel led ▁Inter state ▁ 2 8 4 ▁State ▁Road ▁ 5 0 1 ▁– ▁I - 8 4 ▁Exit ▁ 4 3 ▁r amp ▁to ▁Park ▁Road ▁State ▁Road ▁ 5 0 2 ▁( Sil ver ▁Lane / S pen cer ▁Street ) ▁– ▁Route ▁ 2 ▁in ▁East ▁Hart ford ▁to ▁U . S . ▁Route ▁ 6 / 4 4 ▁in ▁Manchester ▁State ▁Road ▁ 5 0 3 ▁( S isson ▁Avenue ) ▁– ▁I - 8 4 ▁Exit ▁ 4 6 ▁r amp ▁to ▁Hart ford ▁State ▁Road ▁ 5 0