The Kawasaki Route begins at the Kawasaki-Ukishima Junction as a continuation west for the Tokyo Bay Aqua-Line into Kanagawa Prefecture.

The division between the two expressways is the Bayshore Route, which travels along the edge of Tokyo Bay.

[3] The Ministry of Land, Infrastructure, Transport and Tourism plans to include the connector in an outer ring road around the Greater Tokyo Area.

[4] The Kawasaki Route was first opened on 30 April 2002, with the completion of construction between the interchange at Tonomachi and Kawasaki-Ukishima Junction.

The total cost of the 2-kilometer-long (1.2 mi) extension, including a 700-meter (2,300 ft) tunnel, was ¥2.9 trillion (US$26.42 billion).