▁a ▁main st ay ▁of ▁Southern ▁California ▁life . ▁In ▁ 1 9 4 0 ▁the ▁Ar roy o ▁Sec o ▁Park way , ▁the ▁first ▁fre ew ay , ▁was ▁built ▁as ▁a ▁park way ▁alongside ▁the ▁newly ▁constructed ▁flo od ▁channel ▁in ▁the ▁Los ▁Angeles ▁portion ▁of ▁the ▁Ar roy o . ▁Today , ▁also ▁known ▁as ▁the ▁Pas ad ena ▁Fre ew ay , ▁it ▁continues ▁on ▁through ▁dow nt own ▁becoming ▁the ▁Har bor ▁Fre ew ay , ▁and ▁termin ates ▁near ▁the ▁har bor ▁in ▁San ▁Pedro . ▁ ▁The ▁Ar roy o ▁Sec o ▁Cor rid or ▁Management ▁Plan ▁was ▁completed ▁for ▁the ▁" Ar roy o ▁Sec o ▁Park way " ▁in ▁ 2 0 0 4 . ▁ ▁The ▁Plan ▁was ▁created ▁through ▁a ▁partners hip ▁with ▁the ▁National ▁Trust ▁for ▁Historic ▁Pres ervation , ▁the ▁National ▁Sc en ic ▁By ways ▁Center ▁( F eder al ▁High ways ), ▁Cal trans ▁( State ▁High ways ), ▁the ▁National ▁Park ▁Service , ▁the ▁Santa ▁Mon ica ▁Mountains ▁Conserv ancy , ▁and ▁The ▁Center ▁for ▁Pres ervation ▁Education ▁and ▁Pl anning ▁( C PE P ▁Inc .). ▁ ▁The ▁Ar roy o ▁Sec o ▁Flo od ▁Control ▁Channel , ▁was ▁built ▁by ▁the ▁Works ▁Progress ▁Administration ▁before ▁and ▁during ▁construction ▁of ▁the ▁park way ▁to ▁avoid ▁dam ages ▁from ▁future ▁flo ods . ▁ ▁Flo ods ▁and ▁controls ▁Despite ▁its ▁name , ▁the ▁Ar roy o ▁Sec o ▁generally ▁has ▁a ▁flow ▁of ▁several ▁cub ic