▁immediately ▁north ▁of ▁the ▁station . ▁After ▁the ▁curves , ▁the ▁Bron x ▁River ▁Park way ▁cross es ▁the ▁county ▁line ▁into ▁West chester ▁County ▁at ▁the ▁Mc Le an ▁Avenue / N ere id ▁Avenue ▁over pass ▁and ▁leaves ▁the ▁Bron x . ▁ ▁West chester ▁County ▁Once ▁across ▁the ▁county ▁line ▁the ▁park way ▁is ▁in ▁Y onk ers , ▁close ▁to ▁its ▁boundary ▁with ▁Mount ▁Vern on . ▁A ▁south bound ▁exit , ▁ 1 0 C , ▁serves ▁Bron x ▁River ▁Road ▁at ▁W ake field ▁Avenue ▁near ▁that ▁train ▁station ▁a ▁quarter - mile ▁( 5 0 0 ▁m ) ▁north ▁of ▁the ▁county ▁line , ▁even ▁though ▁the ▁station ▁is ▁in ▁the ▁Bron x ▁and ▁the ▁Har lem ▁Line ▁enters ▁West chester ▁north ▁of ▁it . ▁North ound ▁traffic ▁has ▁ 1 0 A , ▁for ▁Mount ▁Vern on ▁Avenue ▁and ▁Y onk ers ▁Avenue ▁at ▁the ▁Mount ▁Vern on ▁West ▁station ▁three - quarters ▁of ▁a ▁mile ▁() ▁to ▁the ▁north . ▁Another ▁south bound ▁exit , ▁ 1 0 B , ▁serves ▁Bron x ▁River ▁Road ▁just ▁to ▁the ▁north ▁at ▁its ▁M ile ▁Square ▁Road ▁and ▁W inf red ▁Avenue ▁inter sections . ▁The ▁park ▁wid ens ▁around ▁the ▁highway ▁as ▁it ▁b ends ▁slightly , ▁heading ▁even ▁more ▁to ▁the ▁n ortheast . ▁Just ▁past ▁this ▁is ▁exit   1 1 , ▁the ▁Cross ▁County ▁Park way , ▁where ▁the ▁road ▁sw ings ▁toward ▁the ▁east ▁to ▁allow ▁space ▁for ▁the ▁complex ▁of