. ▁With ▁construction ▁ended , ▁however , ▁the ▁population ▁dropped ▁dram atically ▁in ▁Y ale ▁by ▁ 1 8 9 0 , ▁and ▁continued ▁to ▁decl ine ▁after ward . ▁Daily ▁return ▁service ▁remained ▁in ▁effect ▁until ▁World ▁War ▁I . ▁When ▁O nd erd onk ▁moved ▁on ▁in ▁ 1 8 8 6 , ▁he ▁don ated ▁his ▁estate ▁for ▁a ▁girls ' ▁school , ▁All ▁Hall ows . ▁This ▁was ▁ranked ▁as ▁one ▁of ▁the ▁main ▁society ▁schools ▁in ▁the ▁col ony ▁and ▁continued ▁to ▁operate ▁for ▁dec ades , ▁into ▁the ▁ 1 9 2 0 s . ▁ ▁Const ruction ▁of ▁the ▁railway ▁destroyed ▁parts ▁of ▁the ▁Car ib oo ▁W agon ▁Road , ▁which ▁was ▁sever ed ▁between ▁Y ale ▁and ▁Boston ▁Bar ▁and ▁between ▁Ly tt on ▁and ▁Sp ences ▁Bridge . ▁A ▁new ▁highway ▁north ▁from ▁Y ale ▁was ▁not ▁built ▁until ▁the ▁Car ib oo ▁Highway ▁in ▁ 1 9 2 2 , ▁partly ▁built ▁using ▁surv iving ▁road gr ades ▁of ▁the ▁original ▁w agon ▁road ▁and ▁since ▁upgrad ed ▁to ▁the ▁Trans - Can ada ▁Highway . ▁For ▁a ▁long ▁time , ▁this ▁was ▁the ▁main ▁route ▁between ▁the ▁Inter ior ▁and ▁the ▁Coast . ▁After ▁major ▁reconst ruction ▁of ▁the ▁Car ib oo ▁Highway ▁in ▁the ▁ 1 9 5 0 s , ▁involving ▁the ▁construction ▁of ▁several ▁major ▁t unn els , ▁the ▁difficult ▁old ▁can y on ▁stretch ▁of ▁the ▁route ▁achieved ▁highway ▁quality ▁( inst ead ▁of ▁in ▁name