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Tokyo Bay Aqua Line, Kawasaki

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Architectural Building Landmark
The Tokyo Bay Aqua-Line, also known as the Trans-Tokyo Bay Highway, is a bridge–tunnel combination across Tokyo Bay in Japan. It connects the city of Kawasaki in Kanagawa Prefecture with the city of Kisarazu in Chiba Prefecture, and forms part of National Route 409. With an overall length of 14 km, it includes a 4.4 km bridge and 9.6 km tunnel underneath the bay—the fourth-longest underwater tunnel in the world.OverviewAt the bridge–tunnel crossover point, there is an artificial island called Umihotaru with a rest area consisting of restaurants, shops and amusement facilities. Air is supplied to the tunnel by a distinctive tower in the middle of the tunnel, called the Kaze no Tō (風の塔, "the tower of wind"), which uses the bay's almost-constant winds as a power source.The road opened on December 18, 1997 after 23 years of planning and 9 years of construction at a cost of 1.44 trillion yen (11.2 billion USD at the time of opening).The Tokyo Bay Aqua-Line reduced the drive between Chiba and Kanagawa, two important industrial regions, from 90 to 15 minutes, and also contributed to cutting the travel time to the sea leisure area in the southern part of the Bōsō Peninsula from Tokyo and Kanagawa. Before the tunnel opened, one had to drive around about 100 km along the shores of Tokyo Bay and pass through downtown Tokyo.
To visit Tokyo Bay Aqua Line and other attractions in Kawasaki, use our Kawasaki vacation route planner.
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Where to stay in Kawasaki

Numerous affordable options exist when staying in Kawasaki, especially those catering to visitors on business trips. A very basic business-hotel chain has a number of establishments in Kawasaki, offering essentials-only lodgings, while a luxury hotel chain caters to visitors with deeper pockets. Several mid-range enterprises round out the selection, mostly centrally located and providing amenities such as Internet access, breakfast options, and clean, spacious rooms.
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3.9
  • Yes, Tokyo Bay Aqua Line is both a bridge-tunnel that channels across the Tokyo Bay connecting the Kanazawa Prefecture with the Chiba Prefecture. At the intersection of the bridge-tunnel, Umihotaru wh...  more »
  • It consists of 4.4km-bridge (Aqua Bridge) from the east coast to the man-made island Umihotaru Parking Area and 9.6km-tunnel (Aqua Tunnel) from Umihotaru to the west coast. Our tour bus gave us a retu...  more »
  • Enjoy the place, nice view.. My office mate has drove me to see around, nice view and enjoying the bay.  more »
Google
  • Scenic place, located in middle of the sea. You can enjoy 360 degree view of bay area from Yokohama to Chiba. I simply love this place. Have a cup off coffee and sit on the side bench to enjoy the view..
  • Good view of the bay. Gets very windy.
  • One of my favorite place whenever visiting Motherfarm every year. Hats off to the designers and workers. Awesome and no words to say about maintanance it's great.
  • Crowded but a place to stopover after a long drive. Enough choice to decide what to do.
  • The view is amazing. And there so much wind blowing here. It feels kind of nice, actually.