7 0 ▁in ▁the ▁state , ▁with ▁an ▁annual ▁average ▁daily ▁traffic ▁of ▁ 1 8 3 , 0 0 0 ▁vehicles ▁per ▁day . ▁While ▁State ▁Highway   4 7 0 ▁and ▁E - 4 7 0 ▁are ▁not ▁officially ▁branches ▁of ▁I - 7 0 , ▁they ▁are ▁rem n ants ▁of ▁plans ▁for ▁an ▁I - 4 7 0 ▁outer ▁bel t way ▁around ▁Den ver ▁that ▁were ▁cancel led ▁when ▁the ▁allocated ▁funds ▁were ▁spent ▁elsewhere . ▁ ▁Le aving ▁Den ver , ▁the ▁highway ▁serves ▁the ▁re development ▁areas ▁on ▁the ▁former ▁site ▁of ▁St ap leton ▁International ▁Airport ; ▁run way ▁ 1 7 R / 3 5 L ▁crossed ▁over ▁the ▁Inter state ▁at ▁the ▁run way ' s ▁mid section . ▁East ▁of ▁Aur ora , ▁I - 7 0 ▁rejo ins ▁the ▁alignment ▁of ▁U . S . ▁Highway   4 0 ▁at ▁Col f ax ▁Avenue . ▁The ▁fre ew ay ▁proceed s ▁east ▁across ▁the ▁Great ▁Pla ins , ▁briefly ▁di pping ▁south ▁to ▁serve ▁the ▁city ▁of ▁Lim on , ▁which ▁b ills ▁itself ▁as ▁Hub ▁City ▁because ▁of ▁the ▁many ▁rail ▁and ▁road ▁ar ter ies ▁that ▁intersect ▁there . ▁I - 7 0 ▁enters ▁Kansas ▁near ▁Bur ling ton , ▁a ▁small ▁community ▁known ▁for ▁having ▁one ▁of ▁the ▁oldest ▁car ous els ▁in ▁the ▁United ▁States . ▁ ▁History ▁As ▁first ▁proposed ▁in ▁ 1 9 4 4 , ▁the ▁western ▁termin us ▁of ▁I - 7 0