The Higashi-Kantō Expressway is a national expressway in Japan. It is owned and operated by East Nippon Expressway Company.

The Bayshore Route signed as Route B, is one of the routes of the tolled Shuto Expressway system in the Greater Tokyo Area. The Bayshore Route is a 62.1-kilometer (38.6 mi) stretch of toll highway that runs from the Kanazawa ward of Yokohama in the west, northeast to the city of Ichikawa in Chiba Prefecture in the east. Opened in phases beginning in 1976 and ending in 2001, it is an important route that runs between the artificial islands lining the western shore of Tokyo Bay by way of bridges and sub-sea tunnels that bypass central Tokyo.