▁Lock s ▁for ▁non - mot or ized ▁traffic ▁in ▁the ▁ 1 9 9 0 s , ▁to ▁be ▁managed ▁by ▁the ▁State ▁Park s ▁and ▁Rec re ation ▁Department . ▁An ▁interpret ive ▁sign ▁was ▁installed ▁at ▁the ▁site ▁in ▁ 2 0 0 7 . ▁ ▁Just ▁to ▁the ▁east ▁of ▁the ▁park , ▁within ▁the ▁national ▁forest ▁the ▁trail ▁passes ▁under ▁I - 8 4 ▁in ▁a ▁ 1 5 0 - foot ▁( 5 0 ▁m ) ▁long ▁pre cast ▁concrete ▁rock - fac ed ▁tunnel ▁( ). ▁The ▁$ 5 0 0 , 0 0 0 ▁structure ▁was ▁built ▁as ▁part ▁of ▁the ▁rest oration ▁project , ▁and ▁was ▁required ▁to ▁connect ▁the ▁park ▁to ▁another ▁int act ▁piece ▁of ▁road , ▁located ▁north ▁of ▁I - 8 4 ▁at ▁the ▁west ▁Cas cade ▁Lock s ▁inter change . ▁ ▁See ▁also ▁ ▁List ▁of ▁Oregon ▁state ▁par ks ▁ ▁References ▁ ▁! col span = 3 | H istor ic ▁Columbia ▁River ▁Highway ▁| - ▁| align = center | R uck el ▁Creek ▁Bridge MP ▁ 4 2 . 7 ▁| align = center | S her idan ▁State ▁Park MP ▁ 4 4 ▁| align = center | C as cade ▁Lock s MP ▁ 4 5 - 4 6 ▁ ▁Category : State ▁par ks ▁of ▁Oregon ▁Category : Col umb ia ▁River ▁G orge ▁Category : H istor ic ▁Columbia ▁River ▁Highway ▁Category : P arks ▁in ▁H ood ▁River ▁County ,