Aqua-Line Tokyo Bay

The Aqua-Line Tokyo Bay consists of an underwater tunnel that runs under Tokyo Bay and a bridge, linking Kawasaki, in Kanagawa prefecture, with Kisarazu, in the Chiba Prefecture, at the opposite end of Tokyo Bay.

The highway, also known by the name of CA, has a total length of 23.7 km and is where National Highway 409 runs (or connects to both ends of the bay), crossing the bay at Aqua- Tokyo Bay Line. 15.1 km correspond to the tunnel and bridge itself, approximately 2/3 are from the underwater tunnel and 1/3 are from the bridge. Its construction cost 11,077 million dollars. It was inaugurated on December 18, 1997. In 2004, the fee for a private vehicle was 3,000 yen, which was lowered to 2,000 yen at the end of March 2005.

View of Mount Fuji and the city of Yokohama from the Umihotaru

At the junction between the underwater tunnel and the bridge there is an artificial island called Umihotaru, which is a resting place (parking area) and lookout. From the Umohotaru, you can see Tokyo Bay and the cities that are on the shores of that bay, such as Tokyo, Yokohama, Kawasaki, Chiba, etc. Also on clear days and with good visibility, you can see Mount Fuji and Mount Tsukuba.

Aqua-Line Tokyo Bay also has another artificial island that is a vent for the underwater tunnel, and is known as the Wind Tower (風の塔 Kaze no tō).

The wind tower

Umihotaru

Image of the bridge, from the city of Kisarazu.

|

Switchers and features

• IC - Exchanger, SIC - Exchanger smart, JCT - Cross exchanger, PA - Park area, SA - Service area, BS - Bus stop, TN - Tunnel, BR - Bridge, TB - Toll.

N.o	Dist. from Origin	Name	Connections	BS	Notes	Location
1 IC/JCT	0.0	IC Ukishima JCT Kawasaki Ukushima	Bayshore route K6 - Kawasaki Route (Autopista Shuto) National Route 409			Kawasaki	Kanagawa
TN		Aqualine Tunnel Tokyo Bay (purchasing strength cyclical)			tunnel length of 9.610 m Prohibition of traffic in dangerous vehicles Wind tower (MEDIATE Kaze no tō): Kawasaki artificial island at almost the midpoint of the tunnel
PA	9.8	Umihotaru Park Area (Exploration)		O	Sea-flooring (LINK LINK) Umihotaru: artificial island Kisarazu, it is possible to return to Kawasaki through the tunnel or follow through the bridge to Kisarasu	Kisarazu	Chiba
BR		Aqualine Bridge Tokyo Bay (purchasing cyclic)			Length approx. 4500 m bridge
2 TB/IC	15.1	Kisarazu toll (plus demonstrated IC Kisarazu Kaneda (!	National Route 409
3 IC	19.0	IC Sodegaura	National Route 409 National Route 410 National Route 16	O		Sodegaura
- JCT	22.2	JCT Kisarazu Nishi (plus whomever trainedJCT)	National Route 409			Kisarazu
16 JCT	23.7	JCT Kisarazu (Haiti)	National Route 409 E14 Tateyama Expressway Ken-ш Expressway (Metropolitan Inter-City Expressway)