▁high ways ▁that ▁are ▁considered ▁essential ▁to ▁the ▁country ' s ▁economy , ▁defense , ▁and ▁mob ility ▁by ▁the ▁Federal ▁Highway ▁Administration . ▁SR ▁ 1 3 ▁is ▁known ▁as ▁the ▁Warren ▁Fre ew ay ▁from ▁Route ▁ 2 4 ▁to ▁Route ▁ 5 8 0 , ▁as ▁named ▁by ▁Assembly ▁Con current ▁Resol ution ▁ 9 6 , ▁Chapter ▁ 1 6 6 ▁in ▁ 1 9 5 7 . ▁ ▁History ▁SR ▁ 1 3 ▁was ▁created ▁to ▁accommod ate ▁the ▁construction ▁of ▁the ▁Gro ve - S ha fter ▁Fre ew ay , ▁now ▁designated ▁State ▁Route ▁ 2 4 . ▁ ▁Before ▁the ▁construction ▁of ▁the ▁Gro ve - S ha fter , ▁Ash by ▁Avenue ▁was ▁State ▁Route ▁ 2 4 , ▁while ▁the ▁balance ▁of ▁the ▁route ▁of ▁today ' s ▁Warren ▁Fre ew ay ▁was ▁not ▁a ▁designated ▁state ▁highway . ▁ ▁The ▁main ▁thorough fare ▁through ▁the ▁Mont cla ir ▁District ▁in ▁those ▁days ▁was ▁Mountain ▁Bl vd . ▁ ▁State ▁Route ▁ 1 3 ▁was ▁formed ▁in ▁ 1 9 4 7 , ▁from ▁SR ▁ 2 4 ▁to ▁then - US ▁ 5 0 ▁via ▁Warren ▁Bou lev ard . ▁In ▁the ▁ 1 9 6 4 ▁state ▁highway ▁ren umber ing , ▁it ▁extended ▁north ▁to ▁I - 8 0 ▁over ▁part ▁of ▁SR ▁ 2 4 , ▁and ▁was ▁r er out ed ▁on ▁its ▁current ▁routing . ▁Before ▁its ▁design ation , ▁it ▁was ▁known ▁as ▁several ▁different ▁legisl