. ▁ ▁The ▁project ▁is ▁not ▁considered ▁vi able ▁due ▁to ▁a ▁lack ▁of ▁interest ▁from ▁the ▁Taiwan ese , ▁st agger ing ▁costs ▁and ▁un sol ved ▁technical ▁problems . ▁At ▁nearly ▁▁ ▁km ▁under se a , ▁the ▁proposed ▁tunnel ▁would ▁be ▁much ▁longer ▁than ▁existing ▁Se ikan ▁T unnel ▁( ), ▁the ▁Channel ▁tunnel ▁() ▁and ▁the ▁China - le ad ▁Boh ai ▁Stra it ▁tunnel ▁project ▁. ▁In ▁addition , ▁Taiwan ▁is ▁concerned ▁about ▁the ▁tunnel ' s ▁potential ▁use ▁by ▁China ▁in ▁ag gress ive ▁military ▁actions . ▁ ▁Non eth eless , ▁in ▁July ▁ 2 0 1 3 , ▁the ▁Chinese ▁State ▁Council ▁approved ▁plans ▁for ▁the ▁project . ▁ ▁See ▁also ▁ ▁Boh ai ▁Stra it ▁tunnel ▁G 3 ▁Be ij ing - T ai pe i ▁Express way ▁Be ij ing – T ai pe i ▁High - Speed ▁Rail ▁Cor rid or ▁G 9 9 ▁Taiwan ▁Ring ▁Express way ▁China ▁National ▁Highway ▁ 2 2 8 ▁Gu ang d ong – H ain an ▁railway ▁ ▁References ▁ ▁External ▁links ▁ ▁An ▁Engineering ▁Con cept ▁of ▁the ▁Taiwan ▁Stra it ▁T unnel ▁So cio e conom ic ▁Imp act ▁of ▁the ▁Taiwan ▁Stra it ▁T unnel ▁ ▁Category : Pro posed ▁under se a ▁t unn els ▁in ▁Asia ▁Category : Transport ation ▁in ▁Taiwan ▁Category : Transport ▁in ▁China ▁Category : K in men ▁Category : Pro posed ▁transport ▁infrastr ucture ▁in ▁China ▁Category : Pro posed ▁transport ation ▁infrastr ucture ▁in