bifurcate
bi•fur•cateBrE /ˈbaɪfəkeɪt/
NAmE /ˈbaɪfərkeɪt/
verb
verb forms[intransitive] (formal) (of roads, rivers, etc.) to divide into two separate parts 
word origin
bi•fur•ca•tion /BrE ˌbaɪfəˈkeɪʃn; NAmE ˌbaɪfərˈkeɪʃn/ noun [countable, uncountable]
