 It connects Tokyo's Inner Circular Route in central Tokyo to the Tokyo Gaikan Expressway where it continues north as the Ōmiya Route.Route 5 begins at Takebashi Junction with the Inner Circular Route in Chiyoda City just north of the Tokyo Imperial Palace.From there it travels northwest through Shinjuku, Bunkyō, Toshima, and Itabashi in Tokyo before crossing over the Arakawa River into Toda in Saitama Prefecture where Route 5 ends at Bijogi Junction where it intersects the Tokyo Gaikan Expressway.